Health care · County · Illinois
Medical and dental practices in Williamson County, IL
The medical and dental practices in Williamson County, IL, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 38 out of 100: Lower middle
Ranked #1,763 of 2,394 scored counties
#75 of 87 scored counties in Illinois
- Listings
- 238
- 30 chain locations (13%)
- Official establishments
- 100
- +6.4% since 2019
- Household spending a year
- $38.5M
- On medical and dental services · $1,330 a household
- Spending per listing
- $162K
- 6% above the U.S.
- Listings per 10k households
- 82.1
- 3% below the U.S.
- Population, 2025
- 67,225
- +0.2% since 2020
See the medical and dental practices around any address in Williamson County
The site report maps the medical and dental practices 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 Williamson 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
Household spending on medical and dental services in Williamson County comes to about $38.5M a year: $1,330 per household, 3% above the U.S. average. Spread across 238 medical and dental practices, that is $162K per practice, 6% above the U.S. figure of $152K.
There are 238 medical and dental practices on map listings in Williamson County as of September 2026. Chain locations make up 13% of them, against 11% across the U.S. Per 10,000 households, that is 82.1, 3% below the U.S. rate of 84.5.
The official count of businesses with payroll classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in Williamson County was 100 in 2023, up 6.4% from 2019. That is one for every 290 households, against one for every 270 across the U.S. Another 38 one-person businesses have no payroll, by official counts.
Between 2020 and 2025, the population of Williamson County grew 0.2%, slower than the U.S. (+3.1%). For medical and dental practices, Williamson County has a Groundwork market score of 38 (lower middle): #1,763 of 2,394 scored counties and #75 of 87 scored counties in Illinois.
How Williamson 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 medical and dental practices 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 | Williamson County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 82.1 | 102.3 | 84.5 |
| Spending per listing | $162K | $148K | $152K |
| Households per official establishment | 290 | 269 | 270 |
| Official establishment growth, 2019–2023 | +6.4% | +0.1% | +1.5% |
| Population growth, 2020–2025 | +0.2% | −0.6% | +3.1% |
| Spending per household on medical and dental services | $1,330 | $1,517 | $1,288 |
| Median household income | $65,604 | $83,390 | $80,734 |
| Groundwork market score | 38 | 43 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 94 → 100+6.4% over the period
- Employees, 2023
- 1,775
- Annual payroll, 2023
- $162.2M
- One-person businesses, 2023
- 38Businesses with no payroll
- Map listings, September 2026
- 23830 chain locations
- Listings at the U.S. rate for this spending
- 253The 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 offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in Williamson 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 Williamson County
- Population, 2025 estimate
- 67,225+0.2% since 2020
- Households
- 28,983
- Median age
- 42.8
- Homes lived in by their owners
- 71%
- Vehicles per household
- 1.8
- Land area
- 420 sq. mi.
- People per square mile
- 159
- Median household income
- $65,604+29.3% vs. 2015–2019, before inflation
- Average household income
- $85,846
- Median home value
- $156,400
- Jobs located here
- 28,604
- Daytime population
- 68,042Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Williamson 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 medical and dental practices on map listings by name and distance.
Or open the report at the center of Williamson County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardDoctors, dentists and clinics across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for medical and dental practices, numbered among those based in Illinois, with Williamson County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Piatt County, IL | 84 | 24 | 34.7 | $441K | +0.6% | #51 of 2,394 |
| 2Cumberland County, IL | 76 | 8 | 19.2 | $700K | −2.1% | #162 of 2,394 |
| 3Kendall County, IL | 76 | 285 | 62.8 | $270K | +9.9% | #184 of 2,394 |
| 4Crawford County, IL | 75 | 32 | 42.7 | $317K | +0.1% | #213 of 2,394 |
| 5Woodford County, IL | 75 | 75 | 51.1 | $304K | −0.8% | #215 of 2,394 |
| 6Johnson County, IL | 74 | 6 | 14.6 | $876K | +0.4% | #220 of 2,394 |
| 7Mercer County, IL | 74 | 21 | 32.0 | $436K | −2.6% | #227 of 2,394 |
| 8Washington County, IL | 74 | 21 | 36.2 | $383K | −1.2% | #229 of 2,394 |
| 9Carroll County, IL | 73 | 20 | 30.4 | $419K | −1.7% | #250 of 2,394 |
| 10Hancock County, IL | 72 | 16 | 21.0 | $618K | −4.4% | #270 of 2,394 |
| 75Williamson County, IL | 38 | 238 | 82.1 | $162K | +0.2% | #1,763 of 2,394 |
Other business types in Williamson 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
- Doctors, dentists and clinics38
- Dentists and orthodontists55
- Primary care and pediatrics48
- Urgent care and walk-in clinics
- Chiropractors48
- Physical therapy61
- Optometrists and eye care52
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many medical and dental practices are in Williamson County, IL?
As of September 2026, map listings count 238 medical and dental practices in Williamson County. 30 of them (13%) are chain locations. The listings count every outpatient clinic and practice, and urgent care. Official counts show 100 businesses with payroll classed as offices of physicians, dentists, chiropractors, optometrists and therapists, and urgent care centers in 2023, up 6.4% from 2019. Official counts list 38 one-person businesses without payroll.
How much do households in Williamson County, IL spend on medical and dental services?
About $38.5M a year, or $1,330 per household. That is 3% above the U.S. average (an index of 103, where 100 is the U.S. average). Spread across the 238 medical and dental practices on map listings, it comes to $162K per practice. It is estimated from the incomes of the 28,983 households in Williamson County and national spending patterns by income.
How does Williamson County, IL compare with the U.S. for medical and dental practices?
Williamson County has 82.1 medical and dental practices per 10,000 households, 3% below the U.S. rate of 84.5. Spending per practice is $162K, 6% above the U.S. figure of $152K. At the U.S. ratio of medical and dental practices to household spending, Williamson County would have about 253, against 238 on map listings. There is one business with payroll in the industry for every 290 households, against one for every 270 across the U.S. The official count rose 6.4% from 2019 to 2023, against +1.5% for the U.S.
How fast is Williamson County, IL growing?
Population estimates put Williamson County at 67,225 people in 2025, up 0.2% since 2020, slower than the U.S. (+3.1%). It has 28,983 households. The median household income in Williamson County is $65,604 a year, 19% below the U.S. median of $80,734. That rose 29.3% from the 2015–2019 survey, 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. Williamson County scores 38 for medical and dental practices (lower middle), #1,763 of 2,394 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Williamson County. It maps the medical and dental practices 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 medical and dental practices · All 56 business types in Williamson County
Screening a site or an acquisition in Williamson 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 Williamson 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.