NAICS 713940

Fitness & Recreational Sports Centers in Mill Valley, CA

The 1 ZIP codes assigned to Mill Valley contained 14 Gyms & Fitness establishments in 2023, of which 10 employed 10 or more people.

Establishments (2023)
14
1 ZIP codes
10 or more employees
10
Practical financing floor
Share of county
16%
Marin County
City population
13,799
2025 estimate

Figures cover the ZIP codes the U.S. Postal Service assigns to Mill Valley (94941). ZIP areas are not municipal boundaries: they can extend beyond city limits and are shared between neighbouring places. This is a count of establishments in Mill Valley's ZIP codes, not a count of businesses inside its city limits.

Establishments by size

Employee-count distribution. For most buyers the businesses worth pursuing sit in the 5 to 49 range: large enough to have a manager and real systems, small enough to be owner-operated.

EmployeesEstablishmentsShareDistribution
1-4428.6%
10-19642.9%
20-49428.6%

How this market compares

Mill Valley against every other city in California on the same measure. City figures cover the ZIP codes assigned to the place rather than its municipal boundary, so they are compared as a share of the businesses in those same ZIP codes rather than per resident. Cities with fewer than 500 businesses in total are left unranked.

Densely served1.10% of local businesses, against 0.48% statewide

This industry takes up a far larger slice of the local business base than it does statewide. A crowded market: expect established competitors and price pressure, but also a deeper pool of businesses to buy.

Vs state share
+130%
Share of local businesses
Rank by count
#91
of 282 cities
Rank by share
#11
of 266 ranked
Since 2020
-13%
Change in establishments

This compares how much of Mill Valley’s business base is fitness & recreational sports centers, against the California figure. Base: 1,277 establishments across all industries in the same ZIP codes, 2023. It does not measure revenue, profitability or whether a market is worth entering.

Business size mix

Mill Valley tracks the California size distribution closely.

Share of establishmentsMill ValleyCaliforniaDifference
Under 5 employeesOwner-operated, often no management layer28.6%28.6%-0.1%
5 to 49 employeesThe range most individual buyers target71.4%26.5%+45.0%
10 or more employeesPractical floor for acquisition financing71.4%18.8%+52.6%

Nearest comparable markets

The closest places to Mill Valley that also have Gyms & Fitness establishments on record. Useful for spotting a gap next door, or realising the market you are looking at is already served from the town over.

MarketEstablishmentsVs state share
Larkspur4n/a
Corte Madera11+350%
Sausalito3-12%
San Anselmo6+140%
San Rafael20+33%

The wider Marin County market

Employment and payroll are reported at county level only, so the figures below describe the county Mill Valley sits in.

County establishments (2023)
86
Marin County
County employees
1,512
Mid-March employment
County annual payroll
$39M
All establishments
Full Gyms & Fitness data for Marin County

What acquirers look at

Membership deferred revenue is a real liability that must be pegged at closing. Boutique studios depend heavily on individual instructors.

Other industries in Mill Valley

Nearby cities

Sources

  1. U.S. Census Bureau, 2023 ZIP Code Business Patterns. Establishment counts and size distribution by ZIP code and NAICS, aggregated over the ZIP codes assigned to each city. Retrieved 2026-09-08.
  2. U.S. Census Bureau, 2023 County Business Patterns. Establishment counts, employment and annual payroll by NAICS. Retrieved 2026-09-08.
  3. U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (2026Q1). Quarterly establishment counts and employment for employers covered by unemployment insurance. Retrieved 2026-09-08.