Health care · County · Illinois
Primary care and pediatric clinics in St. Clair County, IL
The primary care and pediatric clinics in St. Clair County, IL, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 52 out of 100: Upper middle
Ranked #771 of 1,656 scored counties
#31 of 43 scored counties in Illinois
- Listings
- 70
- 6 chain locations (9%)
- Official establishments
- 134
- −19.8% since 2019
- Household spending a year
- $143M
- On medical and dental services · $1,418 a household
- Spending per listing
- $2M
- 15% above the U.S.
- Listings per 10k households
- 6.9
- 4% below the U.S.
- Population, 2025
- 250,708
- −2.5% since 2020
See the primary care and pediatric clinics around any address in St. Clair 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 St. Clair 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
At $1,418 per household (10% above the U.S. average), households in St. Clair County spend about $143M a year on medical and dental services. That is about $2M of household spending for each clinic on map listings, 15% above the U.S. figure of $1.8M. The spending figure covers all medical and dental services, not only primary care and pediatric clinics.
St. Clair County has 70 primary care and pediatric clinics on map listings as of September 2026. Chain locations make up 9% of them, against 9% across the U.S. That is 6.9 per 10,000 households, 4% below the U.S. rate of 7.2.
Official counts show 134 businesses with payroll classed as offices of physicians in St. Clair County in 2023, down 19.8% from 2019. That is one for every 753 households, against one for every 593 across the U.S. Official counts list 80 one-person businesses without payroll. Since fiscal 2022, 2 SBA-backed loans worth $351K have gone to businesses classed as offices of physicians in St. Clair County.
Between 2020 and 2025, the population of St. Clair County declined 2.5%, against +3.1% for the U.S. For primary care and pediatric clinics, St. Clair County has a Groundwork market score of 52 (upper middle): #771 of 1,656 scored counties and #31 of 43 scored counties in Illinois.
How St. Clair 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 | St. Clair County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 6.9 | 7.2 | 7.2 |
| Spending per listing | $2M | $2.1M | $1.8M |
| Households per official establishment | 753 | 671 | 593 |
| Official establishment growth, 2019–2023 | −19.8% | −4.6% | −2.2% |
| Population growth, 2020–2025 | −2.5% | −0.6% | +3.1% |
| Spending per household on medical and dental services | $1,418 | $1,517 | $1,288 |
| Median household income | $73,854 | $83,390 | $80,734 |
| Groundwork market score | 52 | 56 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 167 → 134−19.8% over the period
- Employees, 2023
- 1,500
- Annual payroll, 2023
- $183.2M
- One-person businesses, 2023
- 80Businesses with no payroll
- Map listings, September 2026
- 706 chain locations
- Listings at the U.S. rate for this spending
- 80The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 2
- Amount
- $351K
SBA-backed loans to businesses classed as offices of physicians in St. Clair 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 St. Clair County
- Population, 2025 estimate
- 250,708−2.5% since 2020
- Households
- 100,846
- Median age
- 40.3
- Homes lived in by their owners
- 68%
- Vehicles per household
- 1.8
- Land area
- 658 sq. mi.
- People per square mile
- 386
- Median household income
- $73,854+33.8% vs. 2015–2019, before inflation
- Average household income
- $96,153
- Median home value
- $180,300
- Jobs located here
- 90,959
- Daytime population
- 229,240Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Clair 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 St. Clair 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 St. Clair 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 |
| 31St. Clair County, IL | 52 | 70 | 6.9 | $2M | −2.5% | #771 of 1,656 |
Other business types in St. Clair 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 clinics44
- Dentists and orthodontists58
- Primary care and pediatrics52
- Urgent care and walk-in clinics
- Chiropractors34
- Physical therapy57
- Optometrists and eye care44
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many primary care and pediatric clinics are in St. Clair County, IL?
Map listings as of September 2026 show 70 primary care and pediatric clinics in St. Clair County. 6 of them (9%) are chain locations. The listings count primary care, family medicine and pediatric clinics. Official counts show 134 businesses with payroll classed as offices of physicians in 2023, down 19.8% from 2019. Official counts also show 80 one-person businesses without payroll.
How much do households in St. Clair County, IL spend on medical and dental services?
About $143M a year, or $1,418 per household. That is 10% above the U.S. average (an index of 110, where 100 is the U.S. average). Spread across the 70 primary care and pediatric clinics on map listings, it comes to $2M per clinic. That spending covers all medical and dental services, which primary care and pediatric clinics share with other businesses in the trade. It is estimated from the incomes of the 100,846 households in St. Clair County and national spending patterns by income.
How does St. Clair County, IL compare with the U.S. for primary care and pediatric clinics?
St. Clair County has 6.9 primary care and pediatric clinics per 10,000 households, 4% below the U.S. rate of 7.2. Spending per clinic is $2M, 15% above the U.S. figure of $1.8M. At the U.S. ratio of primary care and pediatric clinics to household spending, St. Clair County would have about 80, against 70 on map listings. There is one business with payroll in the industry for every 753 households, against one for every 593 across the U.S. The official count fell 19.8% from 2019 to 2023, against −2.2% for the U.S.
How fast is St. Clair County, IL growing?
Population estimates put St. Clair County at 250,708 people in 2025, down 2.5% since 2020, against +3.1% for the U.S. It has 100,846 households. Median household income in St. Clair County is $73,854, 9% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 33.8%, 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. St. Clair County scores 52 for primary care and pediatric clinics (upper middle), #771 of 1,656 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Clair 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 St. Clair County
Screening a site or an acquisition in St. Clair 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 St. Clair 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.