Health care · County · Illinois
Primary care and pediatric clinics in Williamson County, IL
The primary care and pediatric clinics in Williamson County, IL, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 48 out of 100: Lower middle
Ranked #896 of 1,656 scored counties
#35 of 43 scored counties in Illinois
- Listings
- 21
- 2 chain locations (10%)
- Official establishments
- 46
- −6.1% since 2019
- Household spending a year
- $38.5M
- On medical and dental services · $1,330 a household
- Spending per listing
- $1.8M
- 3% above the U.S.
- Listings per 10k households
- 7.2
- In line with the U.S.
- Population, 2025
- 67,225
- +0.2% since 2020
See the primary care and pediatric clinics around any address in Williamson County
The site report maps the primary care and pediatric 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 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
As of September 2026, map listings count 21 primary care and pediatric clinics in Williamson County. Of those, 2 are chain locations, or 10%, against 9% across the U.S. That is 7.2 per 10,000 households, in line with the U.S. rate of 7.2.
Households in Williamson County spend about $38.5M a year on medical and dental services, or $1,330 per household, 3% above the U.S. average. That is about $1.8M of household spending for each clinic on map listings, 3% above the U.S. figure of $1.8M. That spending covers all medical and dental services, which primary care and pediatric clinics share with other businesses in the trade.
In 2023, official counts showed 46 businesses with payroll in Williamson County classed as offices of physicians, down 6.1% from 2019. That is one for every 630 households, against one for every 593 across the U.S. Another 34 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%). Williamson County scores 48 (lower middle) on the Groundwork market score for primary care and pediatric clinics, ranking #896 of 1,656 scored counties and #35 of 43 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 primary care and pediatric 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 | Williamson County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 7.2 | 7.2 | 7.2 |
| Spending per listing | $1.8M | $2.1M | $1.8M |
| Households per official establishment | 630 | 671 | 593 |
| Official establishment growth, 2019–2023 | −6.1% | −4.6% | −2.2% |
| 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 | 48 | 56 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 49 → 46−6.1% over the period
- Employees, 2023
- 1,322
- Annual payroll, 2023
- $132.4M
- One-person businesses, 2023
- 34Businesses with no payroll
- Map listings, September 2026
- 212 chain locations
- Listings at the U.S. rate for this spending
- 22The 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 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 primary care and pediatric clinics 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 cardPrimary care and pediatrics across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for primary care and pediatric clinics, 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 |
|---|---|---|---|---|---|---|
| 1Kendall County, IL | 96 | 15 | 3.3 | $5.1M | +9.9% | #3 of 1,656 |
| 2Champaign County, IL | 82 | 19 | 2.2 | $6.1M | +1.8% | #63 of 1,656 |
| 3Henry County, IL | 77 | 6 | 3.0 | $4.7M | −2.2% | #113 of 1,656 |
| 4Clinton County, IL | 77 | 5 | 3.4 | $4.3M | +0.6% | #114 of 1,656 |
| 5Ogle County, IL | 77 | 8 | 3.8 | $3.7M | −0.7% | #117 of 1,656 |
| 6Whiteside County, IL | 74 | 8 | 3.5 | $3.8M | −2.6% | #166 of 1,656 |
| 7Boone County, IL | 73 | 9 | 4.6 | $3.3M | +0.4% | #190 of 1,656 |
| 8DeKalb County, IL | 73 | 20 | 5.1 | $2.8M | +1.5% | #198 of 1,656 |
| 9Adams County, IL | 71 | 9 | 3.2 | $4.1M | −2.1% | #226 of 1,656 |
| 10Stephenson County, IL | 70 | 5 | 2.6 | $5M | −3.0% | #251 of 1,656 |
| 35Williamson County, IL | 48 | 21 | 7.2 | $1.8M | +0.2% | #896 of 1,656 |
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 primary care and pediatric clinics are in Williamson County, IL?
Williamson County has 21 primary care and pediatric clinics on map listings as of September 2026. 2 of them (10%) are chain locations. The listings count primary care, family medicine and pediatric clinics. Official counts show 46 businesses with payroll classed as offices of physicians in 2023, down 6.1% from 2019. Official counts list 34 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 21 primary care and pediatric clinics on map listings, it comes to $1.8M per clinic. The spending figure covers all medical and dental services, not only primary care and pediatric clinics. 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 primary care and pediatric clinics?
Williamson County has 7.2 primary care and pediatric clinics per 10,000 households, in line with the U.S. rate of 7.2. Spending per clinic is $1.8M, 3% above the U.S. figure of $1.8M. At the national ratio of primary care and pediatric clinics to household spending, Williamson County would have about 22, against 21 on map listings. There is one business with payroll in the industry for every 630 households, against one for every 593 across the U.S. The official count fell 6.1% from 2019 to 2023, against −2.2% 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 48 for primary care and pediatric clinics (lower middle), #896 of 1,656 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 primary care and pediatric 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 primary care and pediatric clinics · 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.