Staffing Industry Analysts counted 241 staffing firms with $100 million or more in US revenue in 2023, according to the Largest Staffing Firms in the United States: 2024 Update report released today. The firms listed in this report generated $145.2 billion in US staffing revenue, down from $168.8 billion in last year’s report.

“Despite a challenging year for the staffing industry, the 241 firms included on this year’s list is only down slightly from last year’s record of 251 firms, an impressive sign of resilience among industry leaders,” said SIA Research Analyst Kevin Chen, author of the report. “Furthermore, as a sign of how much the staffing industry has grown in recent years, only 175 firms were included on the list in 2020. While 2024 is shaping up to be another difficult year, the firms on this year’s list show that staffing firms continue to be valuable partners in talent acquisition.”

Healthcare and IT temporary staffing were the most common primary revenue segments, with 29% of the firms reporting each of the segments as their largest; industrial staffing followed at 24%. On the flip side, office/clerical temporary staffing was the largest segment for only five firms, or 2% — a low number of companies given the size of the segment, Chen noted.

Allegis Group, based in Hanover, Maryland, again ranked as the largest US staffing firm. It was followed by Aya Healthcare, a San Diego-based healthcare staffing firm.

Five largest US staffing firms

• Allegis Group, 5.3% market share
• Aya Healthcare, 4.7%
• Randstad Holding, 2.4%
• Express Employment Professionals, 2.1%
• Insight Global, 2.0%

Of the firms on the list, California and Georgia are home to the US corporate headquarters of 23 firms on the list each. Florida and New Jersey follow with headquarters for 21 and 20 firms, respectively.

Staffing revenue in the report includes revenue generated from the provision of temporary workers to business clients as well as from “place and search” services (direct hire/ permanent placement and retained search.) We also include revenue from “temp-to-hire” conversions.

Revenue figures in the report represent SIA’s best estimation based on available information at the time of publication. The accuracy of estimates may vary depending on multiple factors, including firms’ willingness to provide or confirm information about their operations.

The full Largest Staffing Firms in the United States: 2024 Update report is available for SIA’s corporate and CWS Council members.