California Business by the Numbers: 2026 Company Breakdown

Key findings

• California ranks 1st nationally with 7,660,543 companies — 11.8% of all 64,799,929 U.S. companies in the directory.
• Los Angeles is the state’s largest business hub, with 722,167 companies — 9.4% of every company in California.
• Business is concentrated in a few metros: Los Angeles, San Francisco and San Diego together hold 17.8% of the state’s companies.
• Industrial & mechanical leads the state’s industries at 2,121,238 companies (27.7%), across 11 tracked sectors.

How California ranks nationally

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

Top California cities by number of companies

These 10 cities account for 27.4% of all companies in California. Select any city to browse its full company list.

Browse all California companies →

California companies by industry

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

What the numbers show

California’s 7,660,543 companies place it 1st nationally, 11.8% of the U.S. total. Activity clusters in its largest metros — Los Angeles, San Francisco and San Diego alone account for 17.8% of the state’s companies — while industrial & mechanical is the dominant sector at 27.7%. 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 California directory total. Data compiled by Factur, a sales and marketing firm for B2B manufacturers.