Top 10 Staffing Companies in USA 2026

US hiring hasn’t been easy for the past few years. Demand for temps cooled. Budgets tightened. Plenty of staffing firms shrank.

Now that trend looks like it’s turning. Staffing Industry Analysts (SIA) expects US staffing revenue to rise about 1% in 2026 after three straight years of decline. That’s hardly a boom, but it is a turnaround, and many of the largest firms are already reporting it. ManpowerGroup’s US revenue grew 5.5% in the third quarter of 2026. Randstad’s North American business grew 9% organically in the same period.

So who leads the market? SIA’s 2026 list of the largest US staffing firms counted 214 companies with at least $100 million in US staffing revenue in 2025. Together they brought in $122.4 billion that year. The ten at the top range from privately held giants such as Allegis Group to listed names like Robert Half and Kelly, plus three healthcare specialists.

Also Read: Top 10 Staffing Companies in India 2026

Our ranking is simple. We sort by estimated 2025 US staffing revenue, as published by SIA in June 2026. Company facts come from earnings releases, SEC filings and company announcements published through October 27, 2026. This guide covers the top 10 staffing companies in USA for 2026, what each one does best and which employers it suits.

Why US Businesses Are Turning to Staffing Companies

Staffing companies in USA fill jobs, sure. But for many employers they are now a flexible extension of HR.

Flexible Headcount in an Uncertain Economy

Businesses use temps and contractors to add capacity without long-term payroll commitments. When demand dips, those contracts simply end. That kind of flexibility has kept staffing relevant through three years of soft hiring.

Faster Access to Scarce Skills

Nurses, data center technicians, software engineers and accountants are in short supply. Large staffing firms have deep candidate databases and recruiters who work one niche every day. That usually means they can fill a role faster than an in-house team can.

Specialist Healthcare Talent

Three of the ten largest US staffing firms are healthcare specialists. Hospitals rely on travel nurses, locum tenens physicians and allied health staff to cover shortages, and that demand has turned firms like Aya and CHG into national players.

Managed Programs, Not Just Placements

Big employers increasingly hand their whole contingent workforce to one partner through managed service provider (MSP) and vendor management programs. Allegis, Kelly and Aya all offer these programs on top of traditional staffing.

Top 10 Staffing Companies in USA at a Glance

Top 10 Staffing Companies in USA (2026)

Here’s a closer look at the top 10 staffing companies in USA, ranked by estimated 2025 US staffing revenue from SIA.

1. Allegis Group

Allegis Group is the largest staffing company in the US, with an estimated US$9.11 billion in 2025 US staffing revenue. Cousins Jim Davis and Steve Bisciotti started it in Maryland in 1983 under the name Aerotek, placing contract engineers with aerospace and defense companies. The privately held group is headquartered in Hanover, Maryland.

You could think of Allegis as a family of brands. Aerotek, TEKsystems, Actalent, Aston Carter, Allegis Global Solutions, MarketSource and legal recruiter Major, Lindsey & Africa all belong to it. That breadth lets the parent place talent for everything from warehouse jobs to IT projects. In June 2026, SIA ranked Aerotek as the largest industrial staffing provider in the US, with a 7.3% share of that market in 2025, up from 6.7% a year earlier.

Key Staffing Solutions
✔ Industrial and skilled trades staffing through Aerotek
✔ IT staffing and services through TEKsystems
✔ Engineering and sciences talent through Actalent
✔ Workforce management solutions through Allegis Global Solutions

Best for: Large employers that want one group to cover industrial, technical and professional hiring.

2. Aya Healthcare

Aya Healthcare is the largest healthcare staffing firm in the US and the second-largest staffing firm of any kind, according to SIA, with an estimated US$6.30 billion in 2025 US staffing revenue. Alan Braynin started the company in 2001, and it’s based in San Diego, California. Braynin passed away in May 2025.

Aya places travel, per diem and permanent clinicians, allied health professionals, locum tenens physicians, interim leaders and non-clinical staff. It sells workforce software, too, including vendor management, float pool technology and predictive analytics tools. In December 2025, Aya walked away from its planned acquisition of Cross Country Healthcare, citing the risk of a Federal Trade Commission challenge, and paid a US$20 million termination fee.

Key Staffing Solutions
✔ Travel nursing and allied health staffing
✔ Per diem and permanent clinical placements
✔ Locum tenens and interim leadership
✔ Vendor management and float pool software

Best for: Hospitals and health systems that need clinicians quickly and want software to manage their contingent workforce.

3. Insight Global

Insight Global ranks third with an estimated US$4.55 billion in 2025 US staffing revenue. Glenn Johnson and Scott Madden started the company in Glenn’s basement in 2001. It runs out of Atlanta, and CEO Bert Bean has been in charge since 2018.

Insight Global marked its 25th anniversary in May 2026 with a global workforce of more than 40,000 full-time and contracted employees. IT staffing is its core business. SIA named it No. 2 on its 2026 Largest IT Staffing Firms list for the fifth year running, with an estimated US$3.28 billion in US IT staffing revenue in 2025. The firm has also opened delivery centers in Hyderabad and Manila, and it runs a dedicated healthcare business, Insight Global Health.

Key Staffing Solutions
✔ IT contract and permanent staffing
✔ Professional and project-based staffing
✔ Healthcare staffing through Insight Global Health
✔ Offshore delivery teams in India and the Philippines

Best for: Companies hiring technology talent at speed, from single contractors to large project teams.

4. Randstad

Randstad is the only European-owned company in this top 10, with an estimated US$4.12 billion in 2025 US staffing revenue. Frits Goldschmeding founded it in the Netherlands back in 1960, and it entered the US in 1993 by acquiring Temp Force. Its US corporate office is in Atlanta, Georgia.

North America has become a bright spot for the Dutch group. In the third quarter of 2026, Randstad reported global revenue of €6.11 billion, with organic growth of 3.9%. Its North American revenue grew 9% on an organic basis. Sander van ‘t Noordende is CEO. In the US, Randstad covers general staffing, professional placements, IT and permanent recruitment.

Key Staffing Solutions
✔ Temporary and temp-to-hire staffing
✔ Professional and IT staffing
✔ Permanent recruitment
✔ Workforce and talent programs for large employers

Best for: Employers that want a global brand with a broad US network across many job types.

5. Express Employment Professionals

Express Employment Professionals ranks fifth with an estimated US$3.48 billion in 2025 US staffing revenue. Bill Stoller and Bob Funk founded it in Oklahoma City in 1983. Instead of running one big corporate network, Express is a franchise operation, so most offices are locally owned.

That model puts a local owner in charge of each office. The system reached nearly 900 locations across the US, Canada, South Africa, Australia and New Zealand by early 2026, after signing 54 new and resale franchise agreements in 2025. In 2024, Express reported US$3.7 billion in sales and put 427,000 associates to work. Bill Stoller is chairman and CEO of Express Employment International.

Key Staffing Solutions
✔ Light industrial and commercial staffing
✔ Office and administrative staffing
✔ Direct hire placements
✔ Local HR support through franchise offices

Best for: Small and mid-sized businesses that want a local staffing office with national backing.

6. Kelly Services

Kelly Services earned an estimated US$3.46 billion in 2025 US staffing revenue. William Russell Kelly started the business in Detroit in 1946 as Russell Kelly Office Service. Today Kelly is headquartered in Troy, Michigan, and Chris Layden serves as president and CEO.

2026 has been a year of change for Kelly. In January, Hunt Companies bought 92.2% of Kelly’s voting Class B shares and became its controlling shareholder. Second-quarter 2026 revenue fell 5.8% to US$1,038.2 million, but Kelly beat its own guidance, and a major hyperscaler hired it to source engineers and technicians for new data centers. Kelly also bought Motion Recruitment Partners in 2024 for US$425 million.

Key Staffing Solutions
✔ Enterprise talent management and MSP programs
✔ Science, engineering and technology staffing
✔ Education staffing for schools
✔ Technology recruitment through Motion Recruitment

Best for: Large enterprises, school districts and engineering-heavy employers.

7. ManpowerGroup

ManpowerGroup ranks seventh with an estimated US$3.00 billion in 2025 US staffing revenue. Elmer Winter and Aaron Scheinfeld founded it in 1948, and it’s headquartered in Milwaukee, Wisconsin. It operates through three core brands: Manpower, Experis and Talent Solutions.

Recent results suggest the business is recovering. Third-quarter 2026 revenue reached US$4.84 billion, up 4.4% as reported, and US revenue rose 5.5% to US$728.8 million. The top job is changing, too: on January 1, 2027, Becky Frankiewicz will take over as CEO, and Jonas Prising will move to executive chair.

Key Staffing Solutions
✔ General and light industrial staffing through Manpower
✔ IT and professional staffing through Experis
✔ Workforce solutions through Talent Solutions
✔ Career transition and workforce consulting

Best for: Employers that want a publicly listed partner with general and IT staffing under one roof.

8. CHG Healthcare

CHG Healthcare ranks eighth with an estimated US$2.86 billion in 2025 US staffing revenue. It traces its history to 1979, when it was founded in Salt Lake City as CompHealth, and it bills itself as the company that founded the locum tenens industry. CHG is headquartered in the Salt Lake City area and is led by president and CEO Leslie Snavely.

CHG is best known as the largest physician staffing company in the nation. Its brands include CompHealth, Weatherby Healthcare, RNnetwork, Global Medical Staffing, Locumsmart and Modio. It acquired CareerMD in 2025, and in August 2026 it named Ryan Solomon chief financial officer. CHG says its clinicians care for more than 20 million patients every year.

Key Staffing Solutions
✔ Locum tenens physician staffing
✔ Permanent physician recruitment
✔ Nurse and allied health staffing
✔ Technology and advisory services

Best for: Hospitals and clinics that need physicians and advanced practice providers.

9. Robert Half

Robert Half earned an estimated US$2.62 billion in 2025 US staffing revenue. Founded in 1948, it calls itself the world’s first and largest specialized staffing firm, and it was the first to offer specialized staffing for accounting and finance professionals. Robert Half is based in Menlo Park, California, and owns consulting firm Protiviti.

Third-quarter 2026 revenue at Robert Half was US$1.359 billion, up 0.4% from a year earlier. Net income was US$50 million, or US$0.49 per diluted share, and Protiviti generated US$483.5 million of the quarter’s revenue. M. Keith Waddell is president and CEO. Because the firm offers contract talent, permanent placement and consulting, it’s a go-to name for finance and technology roles.

Key Staffing Solutions
✔ Finance and accounting contract talent
✔ Technology and administrative staffing
✔ Permanent placement
✔ Risk, audit and consulting through Protiviti

Best for: Companies hiring accountants, finance staff and technology professionals.

10. Jackson Healthcare

Jackson Healthcare rounds out the list with an estimated US$2.57 billion in 2025 US staffing revenue. Founder and CEO Richard L. “Rick” Jackson started the company in 2000. It’s privately held, based in Alpharetta, Georgia, and reports more than US$3 billion in annual revenue.

Jackson Healthcare works as a family of healthcare staffing and services companies. It has grown by acquisition, including Omaha-based LRS Healthcare in May 2023. In 2019, it opened a US$100 million headquarters campus in Alpharetta. From 2020 through 2026, it earned nearly US$1 billion from Georgia state agencies, mostly during the COVID-19 pandemic, which showed it can staff at scale.

Key Staffing Solutions
✔ Clinical staffing for hospitals and health systems
✔ Healthcare workforce services
✔ Surge staffing at scale, as during COVID-19
✔ Added capacity through acquired brands such as LRS Healthcare

Best for: Health systems that want a large, privately held partner for clinical staffing.

How to Choose the Right Staffing Partner in USA

Size matters when you compare staffing companies in USA, but it isn’t the whole story. Use these factors to narrow your shortlist.

Match the Firm to Your Talent Segment

General staffing firms work very differently from specialists that focus on physicians. If you hire nurses, consider Aya, CHG or Jackson Healthcare. IT roles? Look at Insight Global or Allegis’s TEKsystems. Filling finance positions? Robert Half is the obvious benchmark.

Check Licensing and Compliance

Clinical staff must hold valid state licenses, and your partner should verify and track them. Ask about its credentialing process, background checks, and how it handles wage and hour rules and worker classification in each state where you operate.

Look at Local Coverage

National reach only matters if the firm has recruiters in your market. Express runs a franchise network of locally owned offices, while some large firms may serve you from a regional hub.

Compare Pricing and Conversion Terms

Ask for bill rates, markups and the fee to convert a temporary worker into a permanent employee. Settle these terms up front so you’re not surprised later.

Ask About Managed Programs and Technology

If you use hundreds of contractors, an MSP or vendor management system can help control costs and improve reporting. Allegis, Kelly and Aya all have programs like this.

Frequently Asked Questions About Staffing Companies in USA

What is the largest staffing company in the USA?

Allegis Group is the largest, with an estimated US$9.11 billion in 2025 US staffing revenue, according to SIA’s 2026 list. Aya Healthcare is second at US$6.30 billion.

Which staffing company is best for healthcare roles?

Aya Healthcare is the largest healthcare staffing firm in the country. For physician and locum tenens staffing, CHG Healthcare is the nation’s largest physician staffing company, and Jackson Healthcare is another large player. Your choice will depend on the roles you’re hiring for and where you need them.

Is the US staffing market growing in 2026?

Modestly. SIA expects US staffing revenue to grow about 1% in 2026, which would end three years of decline. Several large staffing firms also posted higher US or North American revenue in the third quarter of 2026.

Is the biggest staffing firm always the best choice?

No. There’s no single best staffing company for every employer. A smaller specialist with recruiters in your city may outperform a larger firm that serves you from a regional office. Compare how quickly each one fills roles, the quality of its candidates and its pricing before you choose.

Conclusion

Here’s what the top 10 staffing companies in USA for 2026 have in common: they’re big. Allegis, Aya and Insight Global take the top three spots by revenue, while Randstad, Express, Kelly and ManpowerGroup cover general staffing across the country. CHG, Robert Half and Jackson Healthcare complete the list with deep specialist expertise.

The market is starting to recover, but growth is still modest. Look for a partner that knows your talent segment, has recruiters near you and is open about pricing. Get those three things right and the size of the logo matters much less.

Related Reading:

• Top 10 IT Companies in USA 2026
• Top 10 Staffing Companies in Canada 2026
• Top 10 Staffing Companies in the UK 2026