Groceries and convenience · County · Illinois
Convenience stores in St. Clair County, IL
The convenience stores 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 59 out of 100: Upper middle
Ranked #797 of 2,261 scored counties
#28 of 72 scored counties in Illinois
- Listings
- 89
- 51 chain locations (57%)
- Official establishments
- 17
- −26.1% since 2019
- Household spending a year
- $606.4M
- On groceries · $6,013 a household
- Spending per listing
- $6.8M
- 14% below the U.S.
- Listings per 10k households
- 8.8
- 10% above the U.S.
- Population, 2025
- 250,708
- −2.5% since 2020
See the convenience stores around any address in St. Clair County
The site report maps the convenience 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 89 convenience stores in St. Clair County. Chain locations make up 57% of them, against 60% across the U.S. Per 10,000 households, that is 8.8, 10% above the U.S. rate of 8.0.
Household spending on groceries in St. Clair County comes to about $606.4M a year: $6,013 per household, 5% below the U.S. average. Spread across 89 convenience stores, that is $6.8M per store, 14% below the U.S. figure of $7.9M. That spending covers all groceries, which convenience stores share with other businesses in the trade.
The official count of businesses with payroll classed as convenience stores in St. Clair County was 17 in 2023, down 26.1% from 2019. That is one for every 5,932 households, against one for every 3,493 across the U.S. Since fiscal 2022, 3 SBA-backed loans worth $3.2M have gone to businesses classed as convenience stores in St. Clair County.
Population estimates put the population change in St. Clair County from 2020 to 2025 at −2.5%, against +3.1% for the U.S. The Groundwork market score for convenience stores in St. Clair County is 59 (upper middle), #797 of 2,261 scored counties and #28 of 72 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 convenience 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 | 8.8 | 5.5 | 8.0 |
| Spending per listing | $6.8M | $11.5M | $7.9M |
| Households per official establishment | 5,932 | 5,960 | 3,493 |
| Official establishment growth, 2019–2023 | −26.1% | +13.1% | +22.0% |
| 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 | 59 | 62 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 23 → 17−26.1% over the period
- Employees, 2023
- 39
- Annual payroll, 2023
- $1.2M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 8951 chain locations
- Listings at the U.S. rate for this spending
- 77The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 3
- Amount
- $3.2M
SBA-backed loans to businesses classed as convenience 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 convenience 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 cardConvenience stores across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for convenience 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 | 96 | 18 | 4.0 | $17.3M | +9.9% | #4 of 2,261 |
| 2Lake County, IL | 86 | 106 | 4.1 | $16.9M | +0.8% | #79 of 2,261 |
| 3McHenry County, IL | 85 | 57 | 4.8 | $13.9M | +2.5% | #86 of 2,261 |
| 4Will County, IL | 85 | 136 | 5.6 | $12.3M | +2.2% | #89 of 2,261 |
| 5Kane County, IL | 83 | 99 | 5.4 | $12.6M | +1.8% | #116 of 2,261 |
| 6DuPage County, IL | 78 | 173 | 4.9 | $14.1M | +0.3% | #210 of 2,261 |
| 7McLean County, IL | 78 | 40 | 5.7 | $10.8M | +0.1% | #218 of 2,261 |
| 8DeKalb County, IL | 78 | 22 | 5.6 | $10.7M | +1.5% | #219 of 2,261 |
| 9Boone County, IL | 76 | 8 | 4.1 | $15.3M | +0.4% | #266 of 2,261 |
| 10Woodford County, IL | 75 | 6 | 4.1 | $15.8M | −0.8% | #287 of 2,261 |
| 28St. Clair County, IL | 59 | 89 | 8.8 | $6.8M | −2.5% | #797 of 2,261 |
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 convenience stores are in St. Clair County, IL?
There are 89 convenience stores on map listings in St. Clair County as of September 2026. 51 of them (57%) are chain locations. The listings count convenience stores without fuel. Official counts show 17 businesses with payroll classed as convenience stores in 2023, down 26.1% 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 89 convenience stores on map listings, it comes to $6.8M per store. The spending figure covers all groceries, not only convenience 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 convenience stores?
St. Clair County has 8.8 convenience stores per 10,000 households, 10% above the U.S. rate of 8.0. Spending per store is $6.8M, 14% below the U.S. figure of $7.9M. At the national ratio of convenience stores to household spending, St. Clair County would have about 77, against 89 on map listings. There is one business with payroll in the industry for every 5,932 households, against one for every 3,493 across the U.S. The official count fell 26.1% from 2019 to 2023, against +22.0% 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 59 for convenience stores (upper middle), #797 of 2,261 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 convenience 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 convenience 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.