Groundwork

Fitness and classes · County · Illinois

Gyms in Hamilton County, IL

The gyms in Hamilton County, IL, the household spending behind them and how the market ranks against other counties.

Groundwork market score

Not scored

Counties under 10,000 people aren’t scored, since a few businesses can swing their figures.

Listings
3
0 chain locations (0%)
Official establishments
n/a
Fewer than 3, or not published
Household spending a year
$2.6M
On memberships, classes and admissions · $776 a household
Spending per listing
$876K
33% below the U.S.
Listings per 10k households
8.9
17% above the U.S.
Population, 2025
7,859
−1.7% since 2020

See the gyms around any address in Hamilton County

The site report maps the gyms 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 Hamilton County. Signed out, you see a blurred preview; on an account, each report is one action.

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Survey 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 3 gyms in Hamilton County. Per 10,000 households, that is 8.9, 17% above the U.S. rate of 7.6.

Households in Hamilton County spend about $2.6M a year on memberships, classes and admissions, or $776 per household, 21% below the U.S. average. Spread across 3 gyms, that is $876K per gym, 33% below the U.S. figure of $1.3M. That spending covers all memberships, classes and admissions, which gyms share with other businesses in the trade.

There is no official count of businesses with payroll classed as fitness and recreational sports centers in Hamilton County: counts under 3 aren’t published.

Between 2020 and 2025, the population of Hamilton County declined 1.7%, against +3.1% for the U.S. Counties under 10,000 people aren’t given a market score, since a few businesses can swing their figures.

How Hamilton County compares

The same measures for Illinois and the whole U.S. Spending per listing divides a year of household spending on all memberships, classes and admissions by the gyms counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.

Gyms in Hamilton County, IL compared with Illinois and the U.S.
MeasureHamilton CountyIllinoisU.S.
Listings per 10k households8.97.77.6
Spending per listing$876K$1.4M$1.3M
Households per official establishment (all fitness and recreational sports centers)n/a3,1073,109
Official establishment growth, 2019–2023n/a+2.9%+5.8%
Population growth, 2020–2025−1.7%−0.6%+3.1%
Spending per household on memberships, classes and admissions$776$1,054$983
Median household income$65,746$83,390$80,734
Groundwork market scoreNot scored50

Official counts and lending

Businesses

Official establishments, 2019 to 2023
n/aAll fitness and recreational sports centers
Employees, 2023
n/a
Annual payroll, 2023
n/a
One-person businesses, 2023
Not publishedNot published for this business type
Map listings, September 2026
30 chain locations
Listings at the U.S. rate for this spending
2The 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 and recreational sports centers in Hamilton 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. These official figures cover all fitness and recreational sports centers, not only gyms.

Population and households in Hamilton County

Population, 2025 estimate
7,859−1.7% since 2020
Households
3,387
Median age
42.6
Homes lived in by their owners
76%
Vehicles per household
2.0
Land area
435 sq. mi.
People per square mile
18
Median household income
$65,746
Average household income
$92,896
Median home value
$113,700
Jobs located here
2,008
Daytime population
6,441Residents who don’t work, plus everyone whose job is here

Looking at a specific site in Hamilton 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 on map listings by name and distance.

Or open the report at the center of Hamilton County. Signed out, you see a blurred preview; on an account, each report is one action.

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The highest-scoring counties in Illinois for gyms, numbered among those based in Illinois, with Hamilton County marked.

Top counties in Illinois

Counties in Illinois ranked for gyms by Groundwork market score
MarketScoreListingsPer 10k householdsSpending per listingPopulation growthU.S. rank
1Boone County, IL71105.1$1.9M+0.4%#198 of 1,792
2Piatt County, IL6957.2$1.4M+0.6%#254 of 1,792
3Clinton County, IL66106.9$1.4M+0.6%#321 of 1,792
4Kendall County, IL66429.3$1.4M+9.9%#323 of 1,792
5Will County, IL652028.3$1.5M+2.2%#356 of 1,792
6Kankakee County, IL63215.1$1.7M−1.7%#415 of 1,792
7Kane County, IL621709.2$1.3M+1.8%#456 of 1,792
8Cook County, IL611,4586.9$1.6M−1.3%#482 of 1,792
9McHenry County, IL611139.6$1.3M+2.5%#497 of 1,792
10Monroe County, IL59107.2$1.7M−0.3%#547 of 1,792
Hamilton County, ILNot scored38.9$876K−1.7%

Other business types in Hamilton County

None has a Groundwork market score here. Counties under 10,000 people aren’t scored, since a few businesses can swing their figures.

Questions

How many gyms are in Hamilton County, IL?

Hamilton County has 3 gyms on map listings as of September 2026. The listings count gyms and fitness centers. No official count is published for fitness and recreational sports centers in Hamilton County: counts under 3 are left out.

How much do households in Hamilton County, IL spend on memberships, classes and admissions?

About $2.6M a year, or $776 per household. That is 21% below the U.S. average (an index of 79, where 100 is the U.S. average). Spread across the 3 gyms on map listings, it comes to $876K per gym. The spending figure covers all memberships, classes and admissions, not only gyms. It is estimated from the incomes of the 3,387 households in Hamilton County and national spending patterns by income.

How does Hamilton County, IL compare with the U.S. for gyms?

Hamilton County has 8.9 gyms per 10,000 households, 17% above the U.S. rate of 7.6. Spending per gym is $876K, 33% below the U.S. figure of $1.3M. At the national ratio of gyms to household spending, Hamilton County would have about 2, against 3 on map listings.

How fast is Hamilton County, IL growing?

Population estimates put Hamilton County at 7,859 people in 2025, down 1.7% since 2020, against +3.1% for the U.S. It has 3,387 households. The median household income in Hamilton County is $65,746 a year, 19% below the U.S. median of $80,734.

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. The score leaves out counties under 10,000 people, where a handful of businesses would swing it.

How can I see the market around a specific site?

Run a Groundwork site report on an address in Hamilton County. It maps the gyms 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 · All 56 business types in Hamilton County

Screening a site or an acquisition in Hamilton 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 Hamilton 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.