Groceries and convenience · County · Illinois
Grocery stores in St. Clair County, IL
Competitor counts, household spending and official business counts for grocery stores in St. Clair County, IL, set against other counties and the U.S.
Groundwork market score · out of 100
Score 58 out of 100: Upper middle
Ranked #738 of 2,070 scored counties
#19 of 67 scored counties in Illinois
- Listings
- 50
- 19 chain locations (38%)
- Official establishments
- 41
- −6.8% since 2019
- Household spending a year
- $606.4M
- On groceries · $6,013 a household
- Spending per listing
- $12.1M
- 30% above the U.S.
- Listings per 10k households
- 5.0
- 26% below the U.S.
- Population, 2025
- 250,708
- −2.5% since 2020
See the grocery stores around any address in St. Clair County
The site report maps the grocery stores 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
Map listings as of September 2026 show 50 grocery stores in St. Clair County. Chain locations make up 38% of them, against 37% across the U.S. That is 5.0 per 10,000 households, 26% below the U.S. rate of 6.8.
Households in St. Clair County spend about $606.4M a year on groceries, or $6,013 per household, 5% below the U.S. average. Spread across 50 grocery stores, that is $12.1M per store, 30% above the U.S. figure of $9.3M. That spending covers all groceries, which grocery stores share with other businesses in the trade.
The official count of businesses with payroll classed as supermarkets and grocery stores in St. Clair County was 41 in 2023, down 6.8% from 2019. That is one for every 2,460 households, against one for every 2,053 across the U.S.
Population estimates show St. Clair County declined 2.5% from 2020 to 2025, against +3.1% for the U.S. For grocery stores, St. Clair County has a Groundwork market score of 58 (upper middle): #738 of 2,070 scored counties and #19 of 67 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 groceries by the grocery stores 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 | 5.0 | 6.1 | 6.8 |
| Spending per listing | $12.1M | $10.4M | $9.3M |
| Households per official establishment | 2,460 | 1,903 | 2,053 |
| Official establishment growth, 2019–2023 | −6.8% | +2.4% | 0.0% |
| Population growth, 2020–2025 | −2.5% | −0.6% | +3.1% |
| Spending per household on groceries | $6,013 | $6,290 | $6,319 |
| Median household income | $73,854 | $83,390 | $80,734 |
| Groundwork market score | 58 | 45 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 44 → 41−6.8% over the period
- Employees, 2023
- 1,284
- Annual payroll, 2023
- $32.1M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 5019 chain locations
- Listings at the U.S. rate for this spending
- 65The 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 supermarkets and grocery stores 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 grocery stores 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 cardGrocery stores across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for grocery stores, 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 | 92 | 15 | 3.3 | $20.8M | +9.9% | #34 of 2,070 |
| 2Grundy County, IL | 83 | 9 | 4.4 | $14.8M | +2.9% | #133 of 2,070 |
| 3Monroe County, IL | 79 | 5 | 3.6 | $18.5M | −0.3% | #208 of 2,070 |
| 4Boone County, IL | 77 | 7 | 3.6 | $17.5M | +0.4% | #239 of 2,070 |
| 5McHenry County, IL | 76 | 48 | 4.1 | $16.5M | +2.5% | #264 of 2,070 |
| 6Williamson County, IL | 75 | 9 | 3.1 | $18.6M | +0.2% | #285 of 2,070 |
| 7Will County, IL | 74 | 120 | 4.9 | $13.9M | +2.2% | #310 of 2,070 |
| 8Tazewell County, IL | 71 | 25 | 4.6 | $13.2M | −0.9% | #369 of 2,070 |
| 9DeKalb County, IL | 68 | 19 | 4.8 | $12.4M | +1.5% | #452 of 2,070 |
| 10Kane County, IL | 67 | 104 | 5.6 | $12M | +1.8% | #479 of 2,070 |
| 19St. Clair County, IL | 58 | 50 | 5.0 | $12.1M | −2.5% | #738 of 2,070 |
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
- Grocery and convenience stores60
- Grocery stores58
- Convenience stores59
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many grocery stores are in St. Clair County, IL?
There are 50 grocery stores on map listings in St. Clair County as of September 2026. 19 of them (38%) are chain locations. The listings count grocery stores and supermarkets. Official counts show 41 businesses with payroll classed as supermarkets and grocery stores in 2023, down 6.8% from 2019.
How much do households in St. Clair County, IL spend on groceries?
About $606.4M a year, or $6,013 per household. That is 5% below the U.S. average (an index of 95, where 100 is the U.S. average). Spread across the 50 grocery stores on map listings, it comes to $12.1M per store. The spending figure covers all groceries, not only grocery stores. 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 grocery stores?
St. Clair County has 5.0 grocery stores per 10,000 households, 26% below the U.S. rate of 6.8. Spending per store is $12.1M, 30% above the U.S. figure of $9.3M. At the national ratio of grocery stores to household spending, St. Clair County would have about 65, against 50 on map listings. There is one business with payroll in the industry for every 2,460 households, against one for every 2,053 across the U.S. The official count fell 6.8% from 2019 to 2023, against 0.0% 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 58 for grocery stores (upper middle), #738 of 2,070 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 grocery stores 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 grocery stores · 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.