Health care · County · Illinois
Optometrists and eye clinics in St. Clair County, IL
The optometrists and eye 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 44 out of 100: Lower middle
Ranked #814 of 1,302 scored counties
#28 of 46 scored counties in Illinois
- Listings
- 45
- 14 chain locations (31%)
- Official establishments
- 26
- +18.2% since 2019
- Household spending a year
- $143M
- On medical and dental services · $1,418 a household
- Spending per listing
- $3.2M
- In line with the U.S.
- Listings per 10k households
- 4.5
- 10% above the U.S.
- Population, 2025
- 250,708
- −2.5% since 2020
See the optometrists and eye clinics around any address in St. Clair County
The site report maps the optometrists and eye 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. Spread across 45 optometrists and eye clinics, that is $3.2M per practice, in line with the U.S. figure of $3.1M. The spending figure covers all medical and dental services, not only optometrists and eye clinics.
St. Clair County has 45 optometrists and eye clinics on map listings as of September 2026. Of those, 14 are chain locations, or 31%, against 20% across the U.S. That is 4.5 per 10,000 households, 10% above the U.S. rate of 4.1.
Official counts show 26 businesses with payroll classed as offices of optometrists in St. Clair County in 2023, up 18.2% from 2019. That is one for every 3,879 households, against one for every 5,742 across the U.S.
Between 2020 and 2025, the population of St. Clair County declined 2.5%, against +3.1% for the U.S. For optometrists and eye clinics, St. Clair County has a Groundwork market score of 44 (lower middle): #814 of 1,302 scored counties and #28 of 46 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 optometrists and eye 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 | 4.5 | 4.6 | 4.1 |
| Spending per listing | $3.2M | $3.3M | $3.1M |
| Households per official establishment | 3,879 | 5,802 | 5,742 |
| Official establishment growth, 2019–2023 | +18.2% | +3.1% | +0.2% |
| 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 | 44 | 53 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 22 → 26+18.2% over the period
- Employees, 2023
- 177
- Annual payroll, 2023
- $8.6M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 4514 chain locations
- Listings at the U.S. rate for this spending
- 46The 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 optometrists 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 optometrists and eye 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 cardOptometrists and eye care across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for optometrists and eye 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 | 81 | 11 | 2.4 | $7M | +9.9% | #41 of 1,302 |
| 2McLean County, IL | 81 | 20 | 2.8 | $5.2M | +0.1% | #44 of 1,302 |
| 3Champaign County, IL | 79 | 24 | 2.8 | $4.8M | +1.8% | #64 of 1,302 |
| 4Sangamon County, IL | 78 | 23 | 2.7 | $5.3M | −1.0% | #76 of 1,302 |
| 5Tazewell County, IL | 75 | 18 | 3.3 | $4.3M | −0.9% | #123 of 1,302 |
| 6Rock Island County, IL | 72 | 15 | 2.4 | $5.5M | −1.7% | #156 of 1,302 |
| 7Kane County, IL | 72 | 92 | 5.0 | $3.3M | +1.8% | #172 of 1,302 |
| 8Vermilion County, IL | 69 | 6 | 2.0 | $6.3M | −3.7% | #209 of 1,302 |
| 9Will County, IL | 66 | 119 | 4.9 | $3.5M | +2.2% | #283 of 1,302 |
| 10Kankakee County, IL | 63 | 18 | 4.4 | $3.2M | −1.7% | #349 of 1,302 |
| 28St. Clair County, IL | 44 | 45 | 4.5 | $3.2M | −2.5% | #814 of 1,302 |
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 optometrists and eye clinics are in St. Clair County, IL?
Map listings as of September 2026 show 45 optometrists and eye clinics in St. Clair County. 14 of them (31%) are chain locations. The listings count optometrists and eye clinics. Official counts show 26 businesses with payroll classed as offices of optometrists in 2023, up 18.2% from 2019.
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 45 optometrists and eye clinics on map listings, it comes to $3.2M per practice. That spending covers all medical and dental services, which optometrists and eye 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 optometrists and eye clinics?
St. Clair County has 4.5 optometrists and eye clinics per 10,000 households, 10% above the U.S. rate of 4.1. Spending per practice is $3.2M, in line with the U.S. figure of $3.1M. At the U.S. ratio of optometrists and eye clinics to household spending, St. Clair County would have about 46, against 45 on map listings. There is one business with payroll in the industry for every 3,879 households, against one for every 5,742 across the U.S. The official count rose 18.2% from 2019 to 2023, against +0.2% 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 44 for optometrists and eye clinics (lower middle), #814 of 1,302 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 optometrists and eye 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 optometrists and eye 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.