Fitness and classes · County · New Jersey
Gyms and studios in Mercer County, NJ
Competitor counts, household spending and official business counts for gyms and studios in Mercer County, NJ, set against other counties and the U.S.
Groundwork market score · out of 100
Score 55 out of 100: Upper middle
Ranked #805 of 2,088 scored counties
#11 of 21 scored counties in New Jersey
- Listings
- 246
- 51 chain locations (21%)
- Official establishments
- 156
- −8.2% since 2019
- Household spending a year
- $175.4M
- On memberships, classes and admissions · $1,217 a household
- Spending per listing
- $713K
- 8% above the U.S.
- Listings per 10k households
- 17.1
- 15% above the U.S.
- Population, 2025
- 399,289
- +3.3% since 2020
See the gyms and studios around any address in Mercer 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 Mercer 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
Map listings as of September 2026 show 246 gyms and studios in Mercer County. Chain locations make up 21% of them, against 20% across the U.S. That comes to 17.1 for every 10,000 households, 15% above the U.S. rate of 14.9.
Households in Mercer County spend about $175.4M a year on memberships, classes and admissions, or $1,217 per household, 24% above the U.S. average. Spread across 246 gyms and studios, that is $713K per location, 8% above the U.S. figure of $662K.
In 2023, official counts showed 156 businesses with payroll in Mercer County classed as fitness centers and recreation instruction, down 8.2% from 2019. That is one for every 924 households, against one for every 1,641 across the U.S. Since fiscal 2022, 15 SBA-backed loans worth $6M have gone to businesses classed as fitness centers and recreation instruction in Mercer County.
Population estimates show Mercer County grew 3.3% from 2020 to 2025, in step with the U.S. (+3.1%). For gyms and studios, Mercer County has a Groundwork market score of 55 (upper middle): #805 of 2,088 scored counties and #11 of 21 scored counties in New Jersey.
How Mercer County compares
The same measures for New Jersey 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 | Mercer County | New Jersey | U.S. |
|---|---|---|---|
| Listings per 10k households | 17.1 | 18.3 | 14.9 |
| Spending per listing | $713K | $675K | $662K |
| Households per official establishment | 924 | 1,173 | 1,641 |
| Official establishment growth, 2019–2023 | −8.2% | −1.0% | +8.2% |
| Population growth, 2020–2025 | +3.3% | +3.0% | +3.1% |
| Spending per household on memberships, classes and admissions | $1,217 | $1,238 | $983 |
| Median household income | $100,645 | $103,556 | $80,734 |
| Groundwork market score | 55 | 50 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 170 → 156−8.2% over the period
- Employees, 2023
- 2,321
- Annual payroll, 2023
- $47.8M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 24651 chain locations
- Listings at the U.S. rate for this spending
- 265The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 15
- Amount
- $6M
SBA-backed loans to businesses classed as fitness centers and recreation instruction in Mercer 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 Mercer County
- Population, 2025 estimate
- 399,289+3.3% since 2020
- Households
- 144,114
- Median age
- 40.4
- Homes lived in by their owners
- 62%
- Vehicles per household
- 1.6
- Land area
- 225 sq. mi.
- People per square mile
- 1,719
- Median household income
- $100,645+24.2% vs. 2015–2019, before inflation
- Average household income
- $142,372
- Median home value
- $377,700
- Jobs located here
- 262,034
- Daytime population
- 469,892Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Mercer 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 Mercer 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 New Jersey
Every New Jersey market ranked →The highest-scoring counties in New Jersey for gyms and studios, numbered among those based in New Jersey, with Mercer County marked.
Top counties in New Jersey
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Ocean County, NJ | 69 | 301 | 12.3 | $840K | +5.6% | #282 of 2,088 |
| 2Hudson County, NJ | 67 | 390 | 13.0 | $902K | +1.8% | #337 of 2,088 |
| 3Warren County, NJ | 65 | 64 | 14.1 | $764K | +3.2% | #416 of 2,088 |
| 4Salem County, NJ | 64 | 29 | 11.7 | $769K | +2.3% | #455 of 2,088 |
| 5Middlesex County, NJ | 63 | 478 | 15.5 | $828K | +2.6% | #484 of 2,088 |
| 6Passaic County, NJ | 62 | 244 | 13.6 | $776K | +1.6% | #523 of 2,088 |
| 7Burlington County, NJ | 60 | 313 | 17.7 | $704K | +4.3% | #595 of 2,088 |
| 8Essex County, NJ | 60 | 496 | 15.5 | $699K | +4.2% | #597 of 2,088 |
| 9Union County, NJ | 56 | 378 | 18.6 | $680K | +5.0% | #776 of 2,088 |
| 10Sussex County, NJ | 56 | 116 | 20.1 | $639K | +2.9% | #782 of 2,088 |
| 11Mercer County, NJ | 55 | 246 | 17.1 | $713K | +3.3% | #805 of 2,088 |
Other business types in Mercer 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 classes55
- Gyms64
- Yoga, Pilates and fitness studios61
- Martial arts and dance studios45
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many gyms and studios are in Mercer County, NJ?
There are 246 gyms and studios on map listings in Mercer County as of September 2026. 51 of them (21%) are chain locations. The listings count gyms, fitness studios, martial arts and dance studios. Official counts show 156 businesses with payroll classed as fitness centers and recreation instruction in 2023, down 8.2% from 2019.
How much do households in Mercer County, NJ spend on memberships, classes and admissions?
About $175.4M a year, or $1,217 per household. That is 24% above the U.S. average (an index of 124, where 100 is the U.S. average). Spread across the 246 gyms and studios on map listings, it comes to $713K per location. It is estimated from the incomes of the 144,114 households in Mercer County and national spending patterns by income.
How does Mercer County, NJ compare with the U.S. for gyms and studios?
Mercer County has 17.1 gyms and studios per 10,000 households, 15% above the U.S. rate of 14.9. Spending per location is $713K, 8% above the U.S. figure of $662K. At the national ratio of gyms and studios to household spending, Mercer County would have about 265, against 246 on map listings. There is one business with payroll in the industry for every 924 households, against one for every 1,641 across the U.S. The official count fell 8.2% from 2019 to 2023, against +8.2% for the U.S.
How fast is Mercer County, NJ growing?
Population estimates put Mercer County at 399,289 people in 2025, up 3.3% since 2020, in step with the U.S. (+3.1%). It has 144,114 households. Median household income in Mercer County is $100,645, 25% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 24.2%, 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. Mercer County scores 55 for gyms and studios (upper middle), #805 of 2,088 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Mercer 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 Mercer County
Screening a site or an acquisition in Mercer 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 Mercer 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.