> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-in/madison-wi/

# Companies in Madison, WI

Pick an industry to see the bigger companies headquartered in Madison, WI, what they do and how big they are.

By Enrich.chat Editorial. Updated October 22, 2026.

## Industries in Madison

- [Construction Companies in Madison](https://enrich.chat/companies-in/madison-wi/construction/): Construction
- [Real Estate Companies in Madison](https://enrich.chat/companies-in/madison-wi/real-estate/): Real Estate
- [Software Companies in Madison](https://enrich.chat/companies-in/madison-wi/software-development/): Software Development
- [Hospitals and Health Care Organizations in Madison](https://enrich.chat/companies-in/madison-wi/hospitals-and-health-care/): Hospitals and Health Care
- [Nonprofit Organizations in Madison](https://enrich.chat/companies-in/madison-wi/non-profit-organizations/): Non-profit Organizations
- [Financial Services Companies in Madison](https://enrich.chat/companies-in/madison-wi/financial-services/): Financial Services

**Short answer:** Browse the bigger companies headquartered in Madison, WI by industry. Each page lists up to 25 of the biggest by headcount range, what they do and how big they are.

## Key takeaways

- Each page lists up to 25 of the biggest companies in one industry.
- Sizes are ranges, never exact headcounts.
- Ask your AI agent to use www.enrich.chat to find the people at any of them.

## Frequently asked questions

### How are the companies chosen?

Companies shown have a working website that matches their name and list Madison, WI as their headquarters. The biggest by headcount range come first.