Fitness and classes · County · California
Gyms and studios in Marin County, CA
The gyms and studios in Marin County, CA, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 48 out of 100: Lower middle
Ranked #1,141 of 2,088 scored counties
#42 of 55 scored counties in California
- Listings
- 265
- 54 chain locations (20%)
- Official establishments
- 158
- 0.0% since 2019
- Household spending a year
- $209.3M
- On memberships, classes and admissions · $2,032 a household
- Spending per listing
- $790K
- 19% above the U.S.
- Listings per 10k households
- 25.7
- 72% above the U.S.
- Population, 2025
- 253,694
- −2.9% since 2020
See the gyms and studios around any address in Marin County
The site report maps the gyms and studios on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of Marin County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
Household spending on memberships, classes and admissions in Marin County comes to about $209.3M a year: $2,032 per household, 2.1 times the U.S. average. Spread across 265 gyms and studios, that is $790K per location, 19% above the U.S. figure of $662K.
Marin County has 265 gyms and studios on map listings as of September 2026. Of those, 54 are chain locations, or 20%, against 20% across the U.S. That is 25.7 per 10,000 households, 72% above the U.S. rate of 14.9.
In 2023, official counts showed 158 businesses with payroll in Marin County classed as fitness centers and recreation instruction, unchanged from 2019. That is one for every 652 households, against one for every 1,641 across the U.S. Since fiscal 2022, 6 SBA-backed loans worth $4.3M have gone to businesses classed as fitness centers and recreation instruction in Marin County.
Between 2020 and 2025, the population of Marin County declined 2.9%, against +3.1% for the U.S. For gyms and studios, Marin County has a Groundwork market score of 48 (lower middle): #1,141 of 2,088 scored counties and #42 of 55 scored counties in California.
How Marin County compares
The same measures for California and the whole U.S. Spending per listing divides a year of household spending on all memberships, classes and admissions by the gyms and studios counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.
| Measure | Marin County | California | U.S. |
|---|---|---|---|
| Listings per 10k households | 25.7 | 17.1 | 14.9 |
| Spending per listing | $790K | $837K | $662K |
| Households per official establishment | 652 | 1,281 | 1,641 |
| Official establishment growth, 2019–2023 | 0.0% | +14.7% | +8.2% |
| Population growth, 2020–2025 | −2.9% | −0.4% | +3.1% |
| Spending per household on memberships, classes and admissions | $2,032 | $1,435 | $983 |
| Median household income | $149,091 | $99,122 | $80,734 |
| Groundwork market score | 48 | 60 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 158 → 1580.0% over the period
- Employees, 2023
- 2,098
- Annual payroll, 2023
- $55.8M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 26554 chain locations
- Listings at the U.S. rate for this spending
- 316The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 6
- Amount
- $4.3M
SBA-backed loans to businesses classed as fitness centers and recreation instruction in Marin County, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.
Population and households in Marin County
- Population, 2025 estimate
- 253,694−2.9% since 2020
- Households
- 103,018
- Median age
- 47.7
- Homes lived in by their owners
- 65%
- Vehicles per household
- 1.8
- Land area
- 520 sq. mi.
- People per square mile
- 496
- Median household income
- $149,091+29.4% vs. 2015–2019, before inflation
- Average household income
- $232,579
- Median home value
- $1,507,300
- Jobs located here
- 110,704
- Daytime population
- 260,594Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Marin County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the gyms and studios on map listings by name and distance.
Or open the report at the center of Marin County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardGyms, studios and classes across California
Every California market ranked →The highest-scoring counties in California for gyms and studios, numbered among those based in California, with Marin County marked.
Top counties in California
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Yuba County, CA | 92 | 20 | 7.0 | $1.4M | +8.2% | #7 of 2,088 |
| 2Madera County, CA | 84 | 50 | 11.0 | $952K | +7.4% | #35 of 2,088 |
| 3Calaveras County, CA | 82 | 26 | 14.1 | $823K | +2.8% | #54 of 2,088 |
| 4San Joaquin County, CA | 80 | 328 | 13.4 | $942K | +5.5% | #71 of 2,088 |
| 5Amador County, CA | 79 | 24 | 14.9 | $755K | +3.2% | #84 of 2,088 |
| 6San Benito County, CA | 78 | 25 | 12.2 | $1.3M | +8.6% | #86 of 2,088 |
| 7Merced County, CA | 78 | 98 | 11.4 | $796K | +5.1% | #97 of 2,088 |
| 8Colusa County, CA | 77 | 5 | 6.7 | $1.5M | −0.1% | #100 of 2,088 |
| 9Tulare County, CA | 77 | 147 | 10.3 | $950K | +2.4% | #107 of 2,088 |
| 10Tehama County, CA | 76 | 20 | 8.1 | $1.1M | −1.7% | #124 of 2,088 |
| 42Marin County, CA | 48 | 265 | 25.7 | $790K | −2.9% | #1,141 of 2,088 |
Other business types in Marin County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
- Gyms, studios and classes48
- Gyms54
- Yoga, Pilates and fitness studios28
- Martial arts and dance studios54
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many gyms and studios are in Marin County, CA?
Map listings as of September 2026 show 265 gyms and studios in Marin County. 54 of them (20%) are chain locations. The listings count gyms, fitness studios, martial arts and dance studios. Official counts show 158 businesses with payroll classed as fitness centers and recreation instruction in 2023, unchanged from 2019.
How much do households in Marin County, CA spend on memberships, classes and admissions?
About $209.3M a year, or $2,032 per household. That is 2.1 times the U.S. average (an index of 207, where 100 is the U.S. average). Spread across the 265 gyms and studios on map listings, it comes to $790K per location. It is estimated from the incomes of the 103,018 households in Marin County and national spending patterns by income.
How does Marin County, CA compare with the U.S. for gyms and studios?
Marin County has 25.7 gyms and studios per 10,000 households, 72% above the U.S. rate of 14.9. Spending per location is $790K, 19% above the U.S. figure of $662K. At the U.S. ratio of gyms and studios to household spending, Marin County would have about 316, against 265 on map listings. There is one business with payroll in the industry for every 652 households, against one for every 1,641 across the U.S. The official count held level from 2019 to 2023, against +8.2% for the U.S.
How fast is Marin County, CA growing?
Population estimates put Marin County at 253,694 people in 2025, down 2.9% since 2020, against +3.1% for the U.S. It has 103,018 households. The median household income in Marin County is $149,091 a year, 85% above the U.S. median of $80,734. That rose 29.4% from the 2015–2019 survey, before inflation.
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. Marin County scores 48 for gyms and studios (lower middle), #1,141 of 2,088 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Marin County. It maps the gyms and studios on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
How the score works · Top markets for gyms and studios · All 56 business types in Marin County
Screening a site or an acquisition in Marin County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of Marin County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.