Fitness and classes · County · Michigan
Gyms and studios in St. Clair County, MI
Competitor counts, household spending and official business counts for gyms and studios in St. Clair County, MI, set against other counties and the U.S.
Groundwork market score · out of 100
Score 68 out of 100: Upper middle
Ranked #309 of 2,088 scored counties
#18 of 67 scored counties in Michigan
- Listings
- 64
- 12 chain locations (19%)
- Official establishments
- 19
- Businesses with payroll, 2023
- Household spending a year
- $56.5M
- On memberships, classes and admissions · $833 a household
- Spending per listing
- $882K
- 33% above the U.S.
- Listings per 10k households
- 9.4
- 37% below the U.S.
- Population, 2025
- 160,486
- +0.1% since 2020
See the gyms and studios around any address in St. Clair 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 St. Clair 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
As of September 2026, map listings count 64 gyms and studios in St. Clair County. Of those, 12 are chain locations, or 19%, against 20% across the U.S. Per 10,000 households, that is 9.4, 37% below the U.S. rate of 14.9.
Household spending on memberships, classes and admissions in St. Clair County comes to about $56.5M a year: $833 per household, 15% below the U.S. average. That is about $882K of household spending for each location on map listings, 33% above the U.S. figure of $662K.
The official count of businesses with payroll classed as fitness centers and recreation instruction in St. Clair County was 19 in 2023. That is one for every 3,569 households, against one for every 1,641 across the U.S.
Population estimates show St. Clair County grew 0.1% from 2020 to 2025, slower than the U.S. (+3.1%). For gyms and studios, St. Clair County has a Groundwork market score of 68 (upper middle): #309 of 2,088 scored counties and #18 of 67 scored counties in Michigan. That puts it in the top quarter of counties.
How St. Clair County compares
The same measures for Michigan 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 | St. Clair County | Michigan | U.S. |
|---|---|---|---|
| Listings per 10k households | 9.4 | 12.5 | 14.9 |
| Spending per listing | $882K | $720K | $662K |
| Households per official establishment | 3,569 | 2,468 | 1,641 |
| Official establishment growth, 2019–2023 | n/a | +9.6% | +8.2% |
| Population growth, 2020–2025 | +0.1% | +0.6% | +3.1% |
| Spending per household on memberships, classes and admissions | $833 | $902 | $983 |
| Median household income | $71,270 | $72,875 | $80,734 |
| Groundwork market score | 68 | 62 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 19 → 19
- Employees, 2023
- 308
- Annual payroll, 2023
- $5.4M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 6412 chain locations
- Listings at the U.S. rate for this spending
- 85The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 0
- Amount
- $0
SBA-backed loans to businesses classed as fitness centers and recreation instruction in St. Clair 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 St. Clair County
- Population, 2025 estimate
- 160,486+0.1% since 2020
- Households
- 67,816
- Median age
- 44.6
- Homes lived in by their owners
- 81%
- Vehicles per household
- 1.8
- Land area
- 722 sq. mi.
- People per square mile
- 222
- Median household income
- $71,270+25.1% vs. 2015–2019, before inflation
- Average household income
- $90,621
- Median home value
- $224,600
- Jobs located here
- 41,623
- Daytime population
- 129,372Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Clair 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 St. Clair 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 Michigan
Every Michigan market ranked →The highest-scoring counties in Michigan for gyms and studios, numbered among those based in Michigan, with St. Clair County marked.
Top counties in Michigan
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Leelanau County, MI | 85 | 11 | 11.4 | $1M | +3.0% | #28 of 2,088 |
| 2Allegan County, MI | 81 | 47 | 10.3 | $909K | +2.1% | #60 of 2,088 |
| 3Barry County, MI | 79 | 17 | 6.9 | $1.3M | +2.2% | #78 of 2,088 |
| 4Antrim County, MI | 79 | 10 | 9.0 | $921K | +5.3% | #81 of 2,088 |
| 5Clinton County, MI | 79 | 39 | 12.3 | $838K | +1.6% | #82 of 2,088 |
| 6Cass County, MI | 77 | 19 | 9.0 | $969K | +0.2% | #106 of 2,088 |
| 7Newaygo County, MI | 74 | 11 | 5.6 | $1.3M | +3.1% | #145 of 2,088 |
| 8Monroe County, MI | 74 | 62 | 9.8 | $922K | +0.7% | #161 of 2,088 |
| 9Montcalm County, MI | 73 | 22 | 9.0 | $791K | +4.1% | #188 of 2,088 |
| 10Hillsdale County, MI | 72 | 12 | 6.7 | $1.1M | 0.0% | #194 of 2,088 |
| 18St. Clair County, MI | 68 | 64 | 9.4 | $882K | +0.1% | #309 of 2,088 |
Other business types in St. Clair 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 classes68
- Gyms72
- Yoga, Pilates and fitness studios67
- Martial arts and dance studios68
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many gyms and studios are in St. Clair County, MI?
St. Clair County has 64 gyms and studios on map listings as of September 2026. 12 of them (19%) are chain locations. The listings count gyms, fitness studios, martial arts and dance studios. Official counts show 19 businesses with payroll classed as fitness centers and recreation instruction in 2023.
How much do households in St. Clair County, MI spend on memberships, classes and admissions?
About $56.5M a year, or $833 per household. That is 15% below the U.S. average (an index of 85, where 100 is the U.S. average). Spread across the 64 gyms and studios on map listings, it comes to $882K per location. It is estimated from the incomes of the 67,816 households in St. Clair County and national spending patterns by income.
How does St. Clair County, MI compare with the U.S. for gyms and studios?
St. Clair County has 9.4 gyms and studios per 10,000 households, 37% below the U.S. rate of 14.9. Spending per location is $882K, 33% above the U.S. figure of $662K. At the national ratio of gyms and studios to household spending, St. Clair County would have about 85, against 64 on map listings. There is one business with payroll in the industry for every 3,569 households, against one for every 1,641 across the U.S.
How fast is St. Clair County, MI growing?
Population estimates put St. Clair County at 160,486 people in 2025, up 0.1% since 2020, slower than the U.S. (+3.1%). It has 67,816 households. Median household income in St. Clair County is $71,270, 12% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 25.1%, 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. St. Clair County scores 68 for gyms and studios (upper middle), #309 of 2,088 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Clair 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 St. Clair County
Screening a site or an acquisition in St. Clair 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 St. Clair 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.