Health care · County · Illinois
Physical therapy clinics in Knox County, IL
The physical therapy clinics in Knox County, IL, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 58 out of 100: Upper middle
Ranked #491 of 1,422 scored counties
#18 of 41 scored counties in Illinois
- Listings
- 6
- 1 chain location (17%)
- Official establishments
- n/a
- Fewer than 3, or not published
- Household spending a year
- $25.8M
- On medical and dental services · $1,231 a household
- Spending per listing
- $4.3M
- 79% above the U.S.
- Listings per 10k households
- 2.9
- 46% below the U.S.
- Population, 2025
- 47,767
- −4.1% since 2020
See the physical therapy clinics around any address in Knox County
The site report maps the physical therapy clinics 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
Households in Knox County spend about $25.8M a year on medical and dental services, or $1,231 per household, 4% below the U.S. average. Spread across 6 physical therapy clinics, that is $4.3M per clinic, 79% above the U.S. figure of $2.4M. The spending figure covers all medical and dental services, not only physical therapy clinics.
Knox County has 6 physical therapy clinics on map listings as of September 2026. One of them (17%) is a chain location, against 23% across the U.S. That is 2.9 per 10,000 households, 46% below the U.S. rate of 5.4.
Official counts don’t publish a figure for physical, occupational and speech therapists in Knox County, since they leave out counts under 3.
Population estimates show Knox County declined 4.1% from 2020 to 2025, against +3.1% for the U.S. Knox County scores 58 (upper middle) on the Groundwork market score for physical therapy clinics, ranking #491 of 1,422 scored counties and #18 of 41 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 medical and dental services by the physical therapy clinics 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 | 2.9 | 6.1 | 5.4 |
| Spending per listing | $4.3M | $2.5M | $2.4M |
| Households per official establishment | n/a | 1,979 | 2,482 |
| Official establishment growth, 2019–2023 | n/a | +25.8% | +23.1% |
| Population growth, 2020–2025 | −4.1% | −0.6% | +3.1% |
| Spending per household on medical and dental services | $1,231 | $1,517 | $1,288 |
| Median household income | $57,030 | $83,390 | $80,734 |
| Groundwork market score | 58 | 49 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- n/a
- Employees, 2023
- n/a
- Annual payroll, 2023
- n/a
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 61 chain location
- Listings at the U.S. rate for this spending
- 11The 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 physical, occupational and speech therapists 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 physical therapy clinics 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 cardPhysical therapy across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for physical therapy clinics, 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 |
|---|---|---|---|---|---|---|
| 1Macoupin County, IL | 73 | 6 | 3.4 | $4M | −2.6% | #168 of 1,422 |
| 2Kendall County, IL | 72 | 22 | 4.8 | $3.5M | +9.9% | #185 of 1,422 |
| 3Henry County, IL | 71 | 6 | 3.0 | $4.7M | −2.2% | #194 of 1,422 |
| 4Champaign County, IL | 71 | 36 | 4.2 | $3.2M | +1.8% | #204 of 1,422 |
| 5Whiteside County, IL | 70 | 7 | 3.0 | $4.3M | −2.6% | #216 of 1,422 |
| 6Boone County, IL | 69 | 9 | 4.6 | $3.3M | +0.4% | #242 of 1,422 |
| 7Vermilion County, IL | 68 | 5 | 1.7 | $7.5M | −3.7% | #253 of 1,422 |
| 8Sangamon County, IL | 68 | 36 | 4.2 | $3.4M | −1.0% | #257 of 1,422 |
| 9Ogle County, IL | 65 | 7 | 3.4 | $4.3M | −0.7% | #319 of 1,422 |
| 10Macon County, IL | 65 | 17 | 3.9 | $3.4M | −4.3% | #324 of 1,422 |
| 18Knox County, IL | 58 | 6 | 2.9 | $4.3M | −4.1% | #491 of 1,422 |
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
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many physical therapy clinics are in Knox County, IL?
Map listings as of September 2026 show 6 physical therapy clinics in Knox County. One of them (17%) is a chain location. The listings count physical therapy and rehabilitation clinics. No official count is published for physical, occupational and speech therapists in Knox County: counts under 3 are left out.
How much do households in Knox County, IL spend on medical and dental services?
About $25.8M a year, or $1,231 per household. That is 4% below the U.S. average (an index of 96, where 100 is the U.S. average). Spread across the 6 physical therapy clinics on map listings, it comes to $4.3M per clinic. That spending covers all medical and dental services, which physical therapy clinics share with other businesses in the trade. 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 physical therapy clinics?
Knox County has 2.9 physical therapy clinics per 10,000 households, 46% below the U.S. rate of 5.4. Spending per clinic is $4.3M, 79% above the U.S. figure of $2.4M. At the U.S. ratio of physical therapy clinics to household spending, Knox County would have about 11, against 6 on map listings.
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 58 for physical therapy clinics (upper middle), #491 of 1,422 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 physical therapy clinics 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 physical therapy clinics · 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.