317-622-8970Search all companies →Largest IT Companies in Washington (2026)
Factur's directory lists 6,042 IT companies in Washington. These are the 10 largest of them by annual revenue, led by Valve Corp ($5B), F5 Inc ($3.1B) and Concur Technologies Inc ($1.5B).
Size mix: of the 6,041 with a known headcount, 92.6% have 1-50 employees, 5.7% 51-200, 1.4% 201-1000, 18 companies 1001-5000 and 4 companies 5001+. 44 employ more than 500 people.
The 10 largest IT companies in Washington by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | Valve Corp | Bellevue | 500 | $5B |
| 2 | F5 Inc | Seattle | 6,512 | $3.1B |
| 3 | Concur Technologies Inc | Bellevue | 7,246 | $1.5B |
| 4 | ZoomInfo Technologies LLC | Vancouver | 3,180 | $1.2B |
| 5 | Veeam Software | Kirkland | 5,000 | $1.1B |
| 6 | Smartsheet Inc | Bellevue | 3,317 | $1B |
| 7 | Tableau | Seattle | 3,338 | $701M |
| 8 | Bungie Inc | Bellevue | 1,959 | $568M |
| 9 | Porch Group Inc | Seattle | 799 | $482M |
| 10 | Icertis Inc | Bellevue | 2,224 | $467M |
How this list is ranked
Companies are ranked by annual revenue (USD) as recorded on each company's profile in the Factur directory, highest first; companies with the same revenue are ordered by employee count. Only companies with a positive revenue figure on file are ranked, so a large private company with no reported revenue can be missing. The list covers companies whose record places them in Washington and whose Factur industry is IT. Figures are a snapshot of the directory, refreshed when the rankings are regenerated; open a profile for its current data.