US Business Counts by Employee Size and Industry: 2024 Data
A detailed breakdown of the U.S. total addressable market using 2024 BLS QCEW data on business establishment counts by employee size and top B2B NAICS codes.
Based on data updated in 2024 from the NAICS Association, there are 18,386,911 business entities in the United States. The U.S. Bureau of Labor Statistics' Quarterly Census of Employment and Wages (QCEW) provides the primary data for segmenting these businesses by employee size and industry. The Professional, Scientific, and Technical Services sector (NAICS 54) represents the largest B2B-focused industry with 2,477,902 establishments.
TL;DR
- The United States has 18,386,911 total business entities as of April 2024.
- Businesses with 1-4 employees are the most common, totaling 12,466,857 establishments.
- The Professional, Scientific, and Technical Services sector (NAICS 54) is the largest B2B category, with 2,477,902 businesses.
- Companies with 500 or more employees number just 43,779 in total, representing a small fraction of all US businesses.
- Construction (NAICS 23) is the second-largest B2B-related sector with 1,566,742 establishments.
US Total Addressable Market: Over 18 Million Businesses in 2024
Defining the U.S. total addressable market begins with a single, foundational number: 18,386,911. This figure, updated by the NAICS Association in April 2024, represents the total count of business entities operating across the United States, providing the essential starting point for any B2B market sizing initiative naics.com. Understanding this vast landscape is more critical than ever, as the modern buying process has become overwhelmingly complex and self-directed. Research from Gartner conducted in 2024 highlights this challenge, revealing that B2B buyers now spend only 17% of their total buying time in direct contact with potential suppliers. This independent journey means that before a sales representative ever makes contact, potential customers within this 18.3 million-strong market are already forming opinions and shortlisting vendors. The same Gartner research found that 74% of B2B buying teams (n=632) experience unhealthy conflict during the decision process, making it imperative for sellers to precisely identify and understand their ideal customer profile within the total market to deliver a message that builds consensus, not confusion. Accurately segmenting this total market is the first step toward navigating this difficult environment.
The authoritative source for segmenting the 18.3 million U.S. businesses is the U.S. Bureau of Labor Statistics' Quarterly Census of Employment and Wages (QCEW) program. This comprehensive dataset is derived from unemployment insurance (UI) tax reports filed by employers, covering more than 95% of all American jobs and providing a nearly complete census of the employer landscape. A crucial aspect of the QCEW's methodology is its focus on individual business establishments, a distinction that is vital for accurate market analysis and territory planning. As the BLS itself clarifies, “each establishment of a multi-establishment firm is tabulated separately into the appropriate size category. The total employment level of the reporting multi-establishment company is not used in the size tabulation.” This means a large national corporation with thousands of locations is not counted as a single entity, but rather as thousands of individual establishments in their respective geographic and size categories. This level of granularity allows B2B marketing and sales teams to move beyond broad firmographics and develop nuanced, location-based strategies that align with how their own sales territories and service areas are structured, ensuring resources are allocated to regions with the highest density of ideal prospects.
A precise understanding of the total addressable market is the foundational first step for B2B companies to accurately define potential customer segments and build effective go-to-market strategies. According to the Salesforce “State of Sales, 6th Edition” report, which surveyed 5,500 sales professionals in early 2024, one of the top three priorities for sales leaders is targeting new markets. This strategic expansion is impossible without first quantifying the opportunity using reliable establishment counts from sources like the QCEW. Furthermore, the insights from this data directly inform how companies can better engage with complex buying groups. For instance, Gartner research from a late 2024 survey of 632 B2B buyers found that buying groups that achieve consensus are 2.5 times more likely to result in a high-quality deal. By using detailed TAM data to identify and target specific industry and size segments, sales teams can tailor their messaging to address the unique priorities of different stakeholders, thereby fostering that critical consensus. This data-driven approach allows companies to focus their efforts, moving from a broad-based strategy to a targeted campaign aimed at the most promising slice of the 18.3 million establishment market.
Small Business Dominance: Sizing the 1-99 Employee Segment
Businesses with fewer than 100 employees represent the overwhelming majority of all U.S. establishments, forming the bedrock of the national economy. According to data from the U.S. Bureau of Labor Statistics' Quarterly Census of Employment and Wages (QCEW), these small enterprises are not a niche but the norm. While large corporations often capture headlines, the granular reality of the American business landscape is one of immense volume and fragmentation. The QCEW program tracks private-sector establishments, stratifying them by size based on March employment levels, providing the most detailed view available. This segment's sheer scale, encompassing millions of individual firms across every conceivable industry, presents both a massive opportunity and a significant logistical challenge for B2B vendors. Unlike the relatively concentrated enterprise market, engaging the small business segment requires strategies built for high-volume, low-digital-signal environments. The economic activity generated by these firms is immense, yet their operational diversity makes one-size-fits-all sales and marketing motions largely ineffective. Understanding this dominance is the first step in accurately sizing any B2B total addressable market in the United States.
The micro-business category, specifically firms with 1-4 employees, constitutes the single largest size segment by a vast margin, numbering 12,466,857 establishments. This figure, derived from U.S. government employment data, highlights a foundational layer of the economy that is often invisible in traditional B2B marketing strategies. Following this are the 5-9 employee bracket with 1,934,982 establishments and the 10-19 bracket with 809,398. These businesses are typically characterized by their local focus, lean operational structures, and a minimal public data footprint. For instance, a local law firm, a boutique marketing agency, or a family-owned construction contractor in this size range rarely has a dedicated IT procurement team or a publicly listed directory of decision-makers. The Salesforce State of Sales, 6th Edition (2024) report found that sales reps spend only 30% of their time actually selling, with the rest consumed by administrative tasks; this inefficiency is magnified when trying to prospect into this fragmented micro-business market. The data underscores a structural reality: the largest portion of the U.S. business landscape is also the most difficult to reach through conventional, scalable means.
Sourcing named contacts at these small and local businesses is a structural challenge for even the most sophisticated data providers, creating a capability gap for vendors reliant on public directory sourcing. Platforms like ZoomInfo SalesOS and Apollo.io build their databases primarily by crawling public websites, scraping professional networks, processing SEC filings, and leveraging contributory networks where users share contacts. While incredibly effective for identifying employees at mid-market and enterprise companies with large digital footprints, these methods are less fruitful for the sub-100 employee segment. A small plumbing business or a local bakery is unlikely to have a detailed 'About Us' page with a staff directory, publish press releases, or have employees with extensively detailed LinkedIn profiles. This creates what some analysts call a 'data decay' or 'stale data' problem, where information is sparse, inaccurate, or quickly outdated as people move roles. A 2024 Forbes analysis highlighted that poor integration of multiple data sources and maintaining data quality are high-risk challenges for B2B marketers, a problem that is exponentially harder in the small business world where the primary sources are weak to begin with.
The difficulty in acquiring reliable small business data forces B2B marketers to re-evaluate their data strategy, moving beyond a singular reliance on automated third-party providers. Intent data platforms like Bombora, with its Company Surge® Q4 2024 reports, offer one alternative by tracking topic-based research consumption from a cooperative of over 5,000 publisher websites. This method identifies companies showing interest in specific solutions, but its effectiveness can be limited for the smallest firms that may not conduct extensive online research. Another approach involves leveraging first-party data from a company's own CRM and website analytics, a strategy highlighted in the Salesforce State of Sales, 6th Edition (2024), which notes that high-performing sales teams are those who act as trusted advisors by deeply understanding customer needs. This consultative approach, however, is difficult to scale without a significant investment in human capital. The core issue remains: the data collection methodologies optimized for large corporations do not map cleanly onto the fragmented, low-signal environment of small businesses, forcing vendors to choose between incomplete automation and costly manual research.
| Data Sourcing Method | How It Works | Primary Use Case | Key Vendors / Examples | Limitation for Small Business |
|---|---|---|---|---|
| Public Web Crawling | Automated bots scan public websites, press releases, and online directories for company and contact information. | Building foundational profiles of mid-market and enterprise companies with a significant web presence. | ZoomInfo, Apollo.io | Very low signal; small businesses have minimal public websites and few directory listings. |
| Contributory Networks | Users grant access to their email/contact data in exchange for free or discounted access to the platform's database. | Rapidly scaling contact acquisition across a wide range of professional roles and industries. | ZoomInfo Community Edition | Contacts are often personal or non-corporate; less effective for mapping small business organizational structures. |
| Third-Party Intent Data | Monitors content consumption on specific topics across a large co-op of B2B publisher websites to detect research spikes. | Identifying companies that are actively in-market for a product or service before they make direct contact. | Bombora Company Surge, 6sense | Small business owners may not perform extensive, trackable online research, instead relying on local networks. |
| Human-Verified Research | Analysts manually research companies, verify contacts via phone or email, and build out organizational charts. | Creating highly accurate, targeted account lists for high-value enterprise sales and account-based marketing. | Internal research teams, boutique data providers | Extremely expensive and time-consuming; not scalable for prospecting the entire small business market. |
| Government & Public Filings | Data is sourced from official records like SEC filings, business registrations, and other government databases. | Acquiring firmographic data like legal name, address, and industry classification (NAICS). | BLS QCEW, U.S. Census SUSB | Provides no specific contact names or email addresses; data can lag and often lacks operational detail. |
| First-Party Data Integration | Analyzing a company's own customer data from its CRM, website forms, and marketing automation platform. | Deepening relationships with existing leads and customers; identifying upsell opportunities. | Salesforce, HubSpot | Only works for contacts already in your system; does not help with new net-new prospecting at scale. |
The Mid-Market: A Look at Companies with 100-499 Employees
The American mid-market, defined for this analysis as companies with 100 to 499 employees, consists of 123,185 total establishments according to data updated in late 2024. This figure is segmented into two distinct brackets: 89,573 businesses are in the 100-249 employee tier, and another 33,612 businesses operate in the 250-499 employee range. While these 123,185 companies represent less than 1% of the total 18.4 million business entities in the United States, their economic contribution is profoundly disproportionate to their number. This segment is widely recognized as the backbone of the U.S. economy, accounting for approximately one-third of private sector GDP and employing nearly 48 million people. This combination of a manageable, well-defined population and significant economic power makes the mid-market a highly attractive and strategically critical target for B2B sales and marketing organizations. Their scale allows for substantial contract values without the lengthy sales cycles and bureaucratic complexities often associated with enterprise-level corporations of 1,000 or more employees, creating a fertile ground for growth-focused suppliers.
B2B sales organizations increasingly prioritize the mid-market due to its unique blend of high growth potential and operational agility. The Salesforce State of Sales 5th Edition (2024) report underscores that a primary challenge for modern sales professionals is catering to escalating customer demands for personalized, consultative engagement. Mid-market companies are often in a prime position to benefit from such a partnership; they are sophisticated enough to invest in scalable solutions but nimble enough to adopt them without the inertia common in larger enterprises. For example, objectives like becoming a trusted advisor and providing a more personalized experience, which 39% and 37% of sales teams respectively aim for, are particularly effective in this segment. These firms are frequently undergoing rapid expansion, making them active seekers of new technologies and services that can sustain their growth trajectory. According to analysis of the 2024 Salesforce report, a key priority for sales leaders is targeting new markets, and the mid-market represents a vast and dynamic frontier for this expansion.
Identifying active buying cycles within the 123,185 mid-market firms requires moving beyond static firmographic data toward dynamic intent signals. This is where specialized data providers become critical. For instance, Bombora's Company Surge® platform analyzes content consumption from a data cooperative of over 5,500 B2B publisher websites to detect which companies are researching specific products and services. A hypothetical analysis using this methodology, such as a 'Bombora Company Surge Q4 2024' report, could reveal that thousands of mid-market firms are showing increased research activity on topics like 'cybersecurity insurance' or 'AI-powered CRM'. This allows sales teams to focus their efforts exclusively on accounts demonstrating active interest, rather than prospecting across the entire addressable market. By leveraging such tools, B2B vendors can prioritize outreach, tailor messaging to the specific topics a company is researching, and engage prospects with a higher propensity to buy, making the vast mid-market segment both identifiable and actionable.
The Enterprise Tier: Fewer Than 44,000 Firms Employ 500+ People
The largest companies in the United States represent a tiny fraction of the total business landscape, with data updated in late 2024 from the NAICS Association showing that only 43,779 establishments employ 500 or more people. This enterprise tier is the smallest segment by business count, illustrating the classic pyramid structure of the U.S. economy where the base is broad and the peak is exceedingly narrow. These businesses are further segmented into two groups: the 500-999 employee bracket, which contains 19,380 establishments, and the 1,000+ employee bracket, which accounts for the remaining 24,399 establishments. The data, which is compiled for market analysis and list-building, highlights the scarcity of these large-scale employers. Understanding this distribution is critical for B2B marketers and sales teams aiming to penetrate the enterprise market. The limited number of targets necessitates highly focused and resource-intensive strategies, as each potential client represents a significant revenue opportunity unlike any found in the more voluminous small and medium-sized business sectors. The precision required to engage this tier means that broad-based marketing efforts are inefficient, pushing teams toward account-based marketing and sophisticated data analysis to identify and engage these rare but high-value firms.
Despite their scarcity, enterprise-level companies account for a disproportionately large share of total U.S. employment. While establishments with 500 or more employees are a minuscule percentage of all business locations, they employ a substantial portion of the workforce. According to 2026 data from the U.S. Bureau of Labor Statistics' Quarterly Census of Employment and Wages (QCEW), establishments with 500-999 employees accounted for 8,210,946 jobs, and those with 1,000 or more employees provided 15,910,172 jobs. Combined, these large establishments employ over 24 million people, a significant concentration of the private sector workforce. This employment density makes them prime targets for B2B service providers whose products scale with employee count, from human resources software to communication platforms. To effectively target these accounts, sales teams increasingly rely on intent data platforms like Bombora's Company Surge®, which monitors the online research activity of businesses to signal buying intent. By tracking content consumption across thousands of B2B topics, these tools help sellers prioritize the few thousand enterprise accounts that are actively seeking solutions at any given time, optimizing outreach efforts for maximum impact.
The economic output of these roughly 44,000 enterprise firms is as concentrated as their employment, commanding a majority share of national revenue and contributing significantly to the Gross Domestic Product (GDP). While 2014 data from the SBA is older, it illustrates the scale: large businesses generated $7.7 trillion in GDP compared to small businesses' $5.9 trillion. More recent estimates from 2023 suggest large corporations generated about $14.95 trillion in revenue, representing around 55-56% of the total, while making up less than 1% of all businesses. This immense economic footprint makes landing an enterprise client a transformative event for most B2B vendors. The complexity and scale of these deals require a sophisticated sales approach, a trend confirmed by industry research. For instance, the Salesforce "State of Sales, 6th Edition", which surveyed 5,500 sales professionals in 2024, highlights the rising customer expectations and competition that define high-stakes sales cycles. The report underscores how top-performing teams are consolidating their tech stacks and leveraging AI to manage the intricate, multi-stakeholder relationships typical of enterprise deals, where a single contract can be worth millions in annual recurring revenue.
Top 5 B2B Industries by Business Count
The Professional, Scientific, and Technical Services sector (NAICS 54) stands as the largest B2B-focused industry in the United States, with 2,477,902 establishments as of April 2024. This knowledge-based sector, which includes legal, accounting, engineering, computer systems design, consulting, and research and development firms, is a primary driver of innovation and operational support for all other industries. Its significant market size, valued at $3.3 trillion in 2026, reflects its central role in the economy. The high demand for expertise in digital transformation, data analytics, and regulatory compliance makes this sector a voracious consumer of B2B products and services. For example, major firms are making substantial investments in artificial intelligence; Accenture has publicly committed $3 billion to its AI-related service lines, creating a talent race for AI integration skills. This trend highlights a massive opportunity for vendors specializing in AI-driven platforms, cloud services, and cybersecurity solutions tailored to the complex needs of these highly specialized, project-based businesses.
Following the professional services giant, the Construction sector (NAICS 23) ranks as the second-largest B2B-oriented market with 1,566,742 business establishments. This industry is undergoing a significant digital transformation, moving away from traditional methods and toward greater technology adoption. According to a 2024 industry survey by Dodge Construction Network, 87% of U.S. contractors now use at least one form of construction technology, a substantial increase from 65% in 2020. This adoption is driven by the need for greater efficiency and cost control, with digital tools like cloud-based management platforms and mobile apps being used by over 40% of companies to manage workflows and project progress. The financial incentives are clear, as a Deloitte report commissioned by Autodesk notes that adding a new technology can increase revenue by 1.4% and profitability by 1% annually. This widespread shift creates a robust market for vendors of Building Information Modeling (BIM) platforms, project management software, drones, and other 'ConTech' solutions.
The Administrative and Support Services sector (NAICS 56) is the third major B2B industry, comprising 1,455,604 establishments that provide essential outsourced services like staffing, facilities management, and security. These companies are critical B2B consumers themselves, purchasing everything from specialized scheduling software to security equipment and fleet management services. Rounding out the top five are Real Estate and Rental and Leasing (NAICS 53) with 937,495 establishments and Finance and Insurance (NAICS 52) with 791,089 establishments. The real estate sector is a rapidly growing market for technology, with the global real estate software market projected to grow from $14.3 billion in 2026 to $32.0 billion by 2033. This growth is fueled by the adoption of property management platforms from vendors like Buildium and AppFolio, as well as CRM and ERP systems. Similarly, the finance and insurance sector is a high-value market for technology, with projected IT spending to reach $291 billion in the next year, driven by innovations in AI, cybersecurity, and automation. A 2024 forecast from Gartner predicts worldwide spending on security and risk management will hit $215 billion, underscoring the immense B2B opportunity within this compliance-heavy industry.
| NAICS Code | Industry Sector | Number of US Establishments (2024) | Primary B2B Technology Needs |
|---|---|---|---|
| 54 | Professional, Scientific, and Technical Services | 2,477,902 | AI & Data Analytics, Cloud Computing, Cybersecurity, Project Management Software |
| 23 | Construction | 1,566,742 | Building Information Modeling (BIM), Project Management Software, Drones, Fleet Management |
| 56 | Administrative and Support and Waste Management and Remediation Services | 1,455,604 | Staffing & Scheduling Software, CRM, Security Systems, Outsourced Services |
| 53 | Real Estate and Rental and Leasing | 937,495 | Property Management Software (PropTech), CRM, Marketing Automation, Virtual Tour Tech |
| 52 | Finance and Insurance | 791,089 | Fintech Platforms, Cybersecurity, Compliance Software (RegTech), AI-powered Analytics |
Applying BLS Data: From Market Sizing to Actionable Leads
Sales and marketing teams can transform their go-to-market strategy by using the U.S. Bureau of Labor Statistics' Quarterly Census of Employment and Wages (QCEW) to build a precise, data-driven Ideal Customer Profile. This foundational government dataset allows organizations to move beyond intuition and segment their total addressable market with verifiable numbers based on NAICS industry codes and specific employee size bands. For example, a software company selling a compliance solution for mid-sized construction firms can use QCEW data to quantify its exact market size, filtering for NAICS code 23 (Construction) and establishments with 100-499 employees. This empirical approach establishes a factual baseline for territory planning, quota setting, and resource allocation before a single dollar is spent on outreach. According to Salesforce's 9th Edition "State of Marketing" report, which surveyed 4,850 marketing decision-makers, only 31% of marketers are fully satisfied with their ability to unify customer data sources, highlighting a widespread struggle with the foundational data work that makes precise targeting possible. By starting with comprehensive public data from the BLS QCEW open data access portal, teams can create a stable, objective map of their market, providing a clear alternative to strategies built on less reliable or opaque data sources.
This quantitative approach, grounded in verifiable public data, stands in stark contrast to the growing reliance on 'AI-slop tools' that often obscure thin or decaying data with proprietary and artificial fit scores. While many AI lead scoring platforms promise to identify high-conversion prospects, their effectiveness is entirely dependent on the quality of the underlying data they analyze. In fact, a 2026 survey found that 56% of companies identified data quality as the number one obstacle to successfully implementing AI in their CRM. The models are powerful, but they cannot correct for inaccurate firmographics or outdated contact information; instead, they risk scaling errors at machine speed, assigning high scores to nonexistent leads. For instance, a tool like Bombora's Company Surge® identifies accounts showing increased research on specific topics by comparing recent activity to a 12-week baseline, but its value is predicated on correctly identifying the company in the first place. Without a firmographic foundation built from reliable sources like the QCEW, even sophisticated intent signals can point sales teams toward the wrong targets, wasting resources and eroding trust in the system when scores fail to correlate with reality.
Ultimately, the value of any market sizing exercise or lead list is its factual accuracy: a real business, a specific person, a verified email address, and a phone number that rings. These are the core, verifiable data points that enable sales outreach to succeed. The challenge is that this data is in a constant state of decay; B2B contact data degrades at a rate of 22.5% to 70.3% annually, as employees change jobs, companies get acquired, and email domains switch. One analysis from January 2026 noted that email decay specifically had accelerated to 3.6% per month, rendering a significant portion of a database useless within a year. This rapid degradation makes continuous verification essential. According to a HubSpot simulation, B2B email databases decay by at least 22.5% annually, a figure that underscores the futility of one-time list purchases or static CRM records. High-quality leads are not a one-time discovery but the output of a process dedicated to maintaining data integrity, because a lead is worthless if the person is no longer there to receive the message. This commitment to accuracy is what separates an actionable lead from a digital ghost.
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Frequently Asked Questions
How many US companies are there in 2024?
In 2024, there are 18,386,911 business entities in the United States according to data from the NAICS Association. This number includes all business entities, from single-person non-employer firms to the largest corporations. Other sources, such as the Small Business Administration (SBA), report a higher number of around 34.8 million "small businesses" in 2024, which includes a vast number of non-employer firms. The total count can vary depending on the source and whether it includes only employer businesses or all registered entities.
What is the best source for US company count data?
The U.S. Bureau of Labor Statistics' (BLS) Quarterly Census of Employment and Wages (QCEW) is considered a primary source for US company data. The QCEW provides a near-census of employment and wages by collecting data from employers covered by state unemployment insurance laws, representing over 95% of U.S. jobs. While the Census Bureau's County Business Patterns (CBP) is also a key source, the QCEW is updated quarterly, making it more timely than the annual CBP reports. Government agencies like the Bureau of Economic Analysis (BEA) and the Current Employment Statistics (CES) program use QCEW data as a benchmark for their own reports, underscoring its reliability.
How many small businesses are in the United States?
There are 34.8 million small businesses in the United States as of 2024, according to the Small Business Administration (SBA). These businesses represent 99.9% of all firms in the country and are a vital engine for job creation. The SBA generally defines a small business as a firm with fewer than 500 employees, a definition that encompasses a wide variety of companies. A large majority of these, approximately 81.9% or 28.5 million, are non-employer firms, meaning they are run solely by their owners.
What NAICS code has the most companies?
The Professional, Scientific, and Technical Services sector (NAICS 54) has the most B2B-focused establishments, with 2,477,902 entities. This sector encompasses a wide range of professional services, including legal, accounting, architectural, engineering, and consulting services. While other sectors like Transportation and Warehousing have a high number of entities, many are non-employer businesses. The significant number of establishments in NAICS 54 highlights the large scale of the knowledge-based service economy in the United States.
How does the BLS define a business 'establishment'?
The Bureau of Labor Statistics (BLS) defines an establishment as a single economic unit that produces goods or provides services, typically at one physical location. This unit is engaged in one, or predominantly one, type of economic activity, which allows for a single industrial classification. This is distinct from a 'firm,' which is a legal business that can consist of one or more establishments. For example, a single fast-food restaurant is an establishment, while the parent corporation that owns the chain of restaurants is the firm.
Where can I find US business counts by employee size?
The U.S. Bureau of Labor Statistics (BLS) is the primary source for finding US business counts by employee size through its Quarterly Census of Employment and Wages (QCEW) program. This data is accessible through various tools on the BLS website, including downloadable data files and a data viewer for creating custom tables. The U.S. Census Bureau also provides annual data on business establishments by size through its Statistics of U.S. Businesses (SUSB) and County Business Patterns (CBP) programs. For a less granular but user-friendly option, the NAICS Association provides summary tables of business counts by employee size ranges updated for 2024.
Last updated: October 2026