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1,700 companies in IT in Wisconsin.
Explore 1,700 IT in Wisconsin listed with contact details, employee size, revenue, and NAICS/SIC codes. Compare suppliers and service providers side by side and reach the right companies directly, or view the same industry in IT in California, IT in New York, IT in Texas.
Largest IT in Wisconsin companies by revenue
The highest-revenue companies in this directory. Open any profile for its full firmographics.
| # | Company | Location | Employees | Revenue |
|---|---|---|---|---|
| 1 | Fiserv Inc | Milwaukee | 38,000 | $20.5B |
| 2 | Epic Systems Corp | Verona | 14,000 | $5.7B |
| 3 | Navitus Health Solutions LLC | Madison | 2,052 | $1.9B |
| 4 | GoHealth | Chicago | 2,261 | $700M |
| 5 | Suominen | Green Bay | 700 | $490M |
| 6 | DeliverHealth Inc | Madison | 2,500 | $294M |
| 7 | OneTouchPoint | Hartland | 458 | $253M |
| 8 | BlackSand Software LLC | Green Bay | 1,221 | $245M |
| 9 | Zywave | Milwaukee | 1,000 | $210M |
| 10 | 365 Electrician Inc | Fontana | 425 | $154M |
IT in Wisconsin companies by size and revenue
| Employees | Companies | Share |
|---|---|---|
| 1-50 | 1,580 | 92.9% |
| 51-200 | 91 | 5.4% |
| 201-1000 | 22 | 1.3% |
| 1001-5000 | 5 | 0.3% |
| 5001+ | 2 | 0.1% |
| Revenue | Companies | Share |
|---|---|---|
| Under $10M | 1,588 | 93.6% |
| $10M-$50M | 85 | 5.0% |
| $50M-$250M | 17 | 1.0% |
| $250M-$1B | 4 | 0.2% |
| $1B+ | 3 | 0.2% |
Share is of companies with a known value — 1,700 with headcount and 1,697 with revenue on file, as of Jul 17, 2026.
Frequently asked questions
How many IT in Wisconsin are there?
There are 1,700 IT in Wisconsin in the directory. Use the filters to narrow by employee count, revenue, or NAICS/SIC code.
How many large companies are in IT in Wisconsin?
12 of the 1,700 companies in IT in Wisconsin employ more than 500 people, and 3 report over $1 billion in annual revenue. See the size and revenue breakdown above for the full distribution.
What size are most IT in Wisconsin companies?
Most are small and mid-sized businesses: the size and revenue tables above show the full spread, from under $10M up to $1B+, across the 1,697 companies with revenue on file.
What information is included for each company?
Every listing includes the company name, location, website, employee size, revenue range where available, and NAICS/SIC classification, with a link to the full profile.
Where does this directory come from?
Listings are compiled and maintained by Factur, a sales and marketing firm for B2B manufacturers. Any company can request an update or removal from its profile page.