Wisconsin Business by the Numbers: 2026 Company Breakdown

Key findings

• Wisconsin ranks 26th nationally with 651,680 companies — 1.0% of all 64,799,929 U.S. companies in the directory.
• Milwaukee is the state’s largest business hub, with 80,520 companies — 12.4% of every company in Wisconsin.
• Business is concentrated in a few metros: Milwaukee, Madison and Green Bay together hold 21.6% of the state’s companies.
• Industrial & mechanical leads the state’s industries at 158,556 companies (24.3%), across 8 tracked sectors.

How Wisconsin ranks nationally

Wisconsin and its closest neighbours by total company count. Select a state to open its own study.

Top Wisconsin cities by number of companies

These 10 cities account for 32.3% of all companies in Wisconsin. Select any city to browse its full company list.

Browse all Wisconsin companies →

Wisconsin companies by industry

Every company is classified by its primary industry using NAICS/SIC codes. Select a sector to see those Wisconsin companies.

What the numbers show

Wisconsin’s 651,680 companies place it 26th nationally, 1.0% of the U.S. total. Activity clusters in its largest metros — Milwaukee, Madison and Green Bay alone account for 21.6% of the state’s companies — while industrial & mechanical is the dominant sector at 24.3%. For buyers and sellers, that means the deepest pools of suppliers and manufacturers sit in a handful of cities and one or two sectors; the charts above link straight into each so you can shortlist by capability and region.

Methodology

Figures reflect companies listed in Factur’s U.S. business directory as of 2026, classified by headquarters city and primary industry using NAICS/SIC codes. “Companies” includes manufacturers, suppliers, and B2B businesses of all sizes; counts are directory totals, not official census figures, and percentages are computed against the Wisconsin directory total. Data compiled by Factur, a sales and marketing firm for B2B manufacturers.