Fitness and classes · County · Illinois
Gyms and studios in Knox County, IL
How Knox County, IL compares with other counties and the U.S. for gyms and studios: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 43 out of 100: Lower middle
Ranked #1,375 of 2,088 scored counties
#57 of 81 scored counties in Illinois
- Listings
- 21
- 4 chain locations (19%)
- Official establishments
- 7
- Businesses with payroll, 2023
- Household spending a year
- $13.8M
- On memberships, classes and admissions · $660 a household
- Spending per listing
- $659K
- In line with the U.S.
- Listings per 10k households
- 10.0
- 33% below the U.S.
- Population, 2025
- 47,767
- −4.1% since 2020
See the gyms and studios around any address in Knox 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 Knox 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 21 gyms and studios in Knox County. Chain locations make up 19% of them, against 20% across the U.S. Per 10,000 households, that is 10.0, 33% below the U.S. rate of 14.9.
Households in Knox County spend about $13.8M a year on memberships, classes and admissions, or $660 per household, 33% below the U.S. average. That is about $659K of household spending for each location on map listings, in line with the U.S. figure of $662K.
In 2023, official counts showed 7 businesses with payroll in Knox County classed as fitness centers and recreation instruction. That is one for every 2,996 households, against one for every 1,641 across the U.S.
Between 2020 and 2025, the population of Knox County declined 4.1%, against +3.1% for the U.S. The Groundwork market score for gyms and studios in Knox County is 43 (lower middle), #1,375 of 2,088 scored counties and #57 of 81 scored counties in Illinois.
How Knox 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 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 | Knox County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 10.0 | 14.6 | 14.9 |
| Spending per listing | $659K | $720K | $662K |
| Households per official establishment | 2,996 | 1,668 | 1,641 |
| Official establishment growth, 2019–2023 | n/a | +3.0% | +8.2% |
| Population growth, 2020–2025 | −4.1% | −0.6% | +3.1% |
| Spending per household on memberships, classes and admissions | $660 | $1,054 | $983 |
| Median household income | $57,030 | $83,390 | $80,734 |
| Groundwork market score | 43 | 51 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 5 → 7
- Employees, 2023
- 169
- Annual payroll, 2023
- $1.4M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 214 chain locations
- Listings at the U.S. rate for this spending
- 21The 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 Knox 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 Knox County
- Population, 2025 estimate
- 47,767−4.1% since 2020
- Households
- 20,972
- Median age
- 42.6
- Homes lived in by their owners
- 71%
- Vehicles per household
- 1.7
- Land area
- 716 sq. mi.
- People per square mile
- 68
- Median household income
- $57,030+29.2% vs. 2015–2019, before inflation
- Average household income
- $74,560
- Median home value
- $111,900
- Jobs located here
- 15,910
- Daytime population
- 44,318Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Knox 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 Knox 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 Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for gyms and studios, numbered among those based in Illinois, with Knox County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Boone County, IL | 77 | 17 | 8.7 | $1.1M | +0.4% | #102 of 2,088 |
| 2Piatt County, IL | 69 | 9 | 13.0 | $800K | +0.6% | #285 of 2,088 |
| 3Jersey County, IL | 68 | 5 | 6.3 | $1.5M | −1.5% | #294 of 2,088 |
| 4Mercer County, IL | 66 | 5 | 7.6 | $1.1M | −2.6% | #362 of 2,088 |
| 5Kendall County, IL | 66 | 72 | 15.9 | $792K | +9.9% | #381 of 2,088 |
| 6Douglas County, IL | 64 | 8 | 10.3 | $821K | +0.5% | #447 of 2,088 |
| 7Woodford County, IL | 63 | 21 | 14.3 | $755K | −0.8% | #490 of 2,088 |
| 8Will County, IL | 61 | 388 | 15.9 | $803K | +2.2% | #554 of 2,088 |
| 9Bond County, IL | 61 | 6 | 9.8 | $802K | +0.6% | #555 of 2,088 |
| 10Ogle County, IL | 61 | 24 | 11.5 | $787K | −0.7% | #556 of 2,088 |
| 57Knox County, IL | 43 | 21 | 10.0 | $659K | −4.1% | #1,375 of 2,088 |
Other business types in Knox 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 classes43
- Gyms46
- Yoga, Pilates and fitness studios
- Martial arts and dance studios53
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many gyms and studios are in Knox County, IL?
Knox County has 21 gyms and studios on map listings as of September 2026. 4 of them (19%) are chain locations. The listings count gyms, fitness studios, martial arts and dance studios. Official counts show 7 businesses with payroll classed as fitness centers and recreation instruction in 2023.
How much do households in Knox County, IL spend on memberships, classes and admissions?
About $13.8M a year, or $660 per household. That is 33% below the U.S. average (an index of 67, where 100 is the U.S. average). Spread across the 21 gyms and studios on map listings, it comes to $659K per location. It is estimated from the incomes of the 20,972 households in Knox County and national spending patterns by income.
How does Knox County, IL compare with the U.S. for gyms and studios?
Knox County has 10.0 gyms and studios per 10,000 households, 33% below the U.S. rate of 14.9. Spending per location is $659K, in line with the U.S. figure of $662K. The count on map listings matches the U.S. ratio of gyms and studios to household spending. There is one business with payroll in the industry for every 2,996 households, against one for every 1,641 across the U.S.
How fast is Knox County, IL growing?
Population estimates put Knox County at 47,767 people in 2025, down 4.1% since 2020, against +3.1% for the U.S. It has 20,972 households. Median household income in Knox County is $57,030, 29% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 29.2%, 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. Knox County scores 43 for gyms and studios (lower middle), #1,375 of 2,088 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Knox 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 Knox County
Screening a site or an acquisition in Knox 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 Knox 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.