Auto · County · Michigan
Gas stations in St. Clair County, MI
How St. Clair County, MI compares with other counties and the U.S. for gas stations: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 53 out of 100: Upper middle
Ranked #1,033 of 2,358 scored counties
#24 of 75 scored counties in Michigan
- Listings
- 90
- 81 chain locations (90%)
- Official establishments
- 52
- −3.7% since 2019
- Household spending a year
- $185M
- On gasoline and other fuels · $2,728 a household
- Spending per listing
- $2.1M
- 14% below the U.S.
- Listings per 10k households
- 13.3
- 22% above the U.S.
- Population, 2025
- 160,486
- +0.1% since 2020
See the gas stations around any address in St. Clair County
The site report maps the gas stations 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
Households in St. Clair County spend about $185M a year on gasoline and other fuels, or $2,728 per household, 5% above the U.S. average. That works out to $2.1M per station, 14% below the U.S. figure of $2.4M.
St. Clair County has 90 gas stations on map listings as of September 2026. Of those, 81 are chain locations, or 90%, against 84% across the U.S. Per 10,000 households, that is 13.3, 22% above the U.S. rate of 10.9.
In 2023, official counts showed 52 businesses with payroll in St. Clair County classed as gasoline stations, down 3.7% from 2019. That is one for every 1,304 households, against one for every 1,184 across the U.S. Another 4 one-person businesses have no payroll, by official counts. Since fiscal 2022, 2 SBA-backed loans worth $2.1M have gone to businesses classed as gasoline stations in St. Clair County.
Between 2020 and 2025, the population of St. Clair County grew 0.1%, slower than the U.S. (+3.1%). St. Clair County scores 53 (upper middle) on the Groundwork market score for gas stations, ranking #1,033 of 2,358 scored counties and #24 of 75 scored counties in Michigan.
How St. Clair County compares
The same measures for Michigan and the whole U.S. Spending per listing divides a year of household spending on all gasoline and other fuels by the gas stations 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 | Michigan | U.S. |
|---|---|---|---|
| Listings per 10k households | 13.3 | 13.6 | 10.9 |
| Spending per listing | $2.1M | $1.9M | $2.4M |
| Households per official establishment | 1,304 | 1,152 | 1,184 |
| Official establishment growth, 2019–2023 | −3.7% | −1.3% | −3.1% |
| Population growth, 2020–2025 | +0.1% | +0.6% | +3.1% |
| Spending per household on gasoline and other fuels | $2,728 | $2,576 | $2,595 |
| Median household income | $71,270 | $72,875 | $80,734 |
| Groundwork market score | 53 | 30 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 54 → 52−3.7% over the period
- Employees, 2023
- 537
- Annual payroll, 2023
- $16M
- One-person businesses, 2023
- 4Businesses with no payroll
- Map listings, September 2026
- 9081 chain locations
- Listings at the U.S. rate for this spending
- 78The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 2
- Amount
- $2.1M
SBA-backed loans to businesses classed as gasoline stations 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
- 160,486+0.1% since 2020
- Households
- 67,816
- Median age
- 44.6
- Homes lived in by their owners
- 81%
- Vehicles per household
- 1.8
- Land area
- 722 sq. mi.
- People per square mile
- 222
- Median household income
- $71,270+25.1% vs. 2015–2019, before inflation
- Average household income
- $90,621
- Median home value
- $224,600
- Jobs located here
- 41,623
- Daytime population
- 129,372Residents 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 gas stations 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 cardGas stations across Michigan
Every Michigan market ranked →The highest-scoring counties in Michigan for gas stations, numbered among those based in Michigan, with St. Clair County marked.
Top counties in Michigan
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Ottawa County, MI | 79 | 105 | 9.4 | $3.1M | +3.9% | #170 of 2,358 |
| 2Livingston County, MI | 75 | 83 | 10.9 | $2.8M | +1.7% | #262 of 2,358 |
| 3Benzie County, MI | 71 | 6 | 7.8 | $3.7M | +3.1% | #361 of 2,358 |
| 4Clinton County, MI | 71 | 34 | 10.7 | $2.8M | +1.6% | #374 of 2,358 |
| 5Barry County, MI | 68 | 32 | 13.1 | $2.3M | +2.2% | #465 of 2,358 |
| 6Kent County, MI | 67 | 251 | 9.8 | $2.7M | +2.5% | #484 of 2,358 |
| 7Allegan County, MI | 67 | 57 | 12.5 | $2.4M | +2.1% | #491 of 2,358 |
| 8Leelanau County, MI | 67 | 14 | 14.5 | $2.1M | +3.0% | #498 of 2,358 |
| 9Kalamazoo County, MI | 66 | 86 | 8.0 | $3.2M | +0.8% | #512 of 2,358 |
| 10Lapeer County, MI | 66 | 42 | 12.1 | $2.5M | +1.0% | #525 of 2,358 |
| 24St. Clair County, MI | 53 | 90 | 13.3 | $2.1M | +0.1% | #1,033 of 2,358 |
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
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many gas stations are in St. Clair County, MI?
Map listings as of September 2026 show 90 gas stations in St. Clair County. 81 of them (90%) are chain locations. The listings count gas stations. Official counts show 52 businesses with payroll classed as gasoline stations in 2023, down 3.7% from 2019. Official counts list 4 one-person businesses without payroll.
How much do households in St. Clair County, MI spend on gasoline and other fuels?
About $185M a year, or $2,728 per household. That is 5% above the U.S. average (an index of 105, where 100 is the U.S. average). Spread across the 90 gas stations on map listings, it comes to $2.1M per station. It is estimated from the incomes of the 67,816 households in St. Clair County and national spending patterns by income.
How does St. Clair County, MI compare with the U.S. for gas stations?
St. Clair County has 13.3 gas stations per 10,000 households, 22% above the U.S. rate of 10.9. Spending per station is $2.1M, 14% below the U.S. figure of $2.4M. At the U.S. ratio of gas stations to household spending, St. Clair County would have about 78, against 90 on map listings. There is one business with payroll in the industry for every 1,304 households, against one for every 1,184 across the U.S. The official count fell 3.7% from 2019 to 2023, against −3.1% for the U.S.
How fast is St. Clair County, MI growing?
Population estimates put St. Clair County at 160,486 people in 2025, up 0.1% since 2020, slower than the U.S. (+3.1%). It has 67,816 households. Median household income in St. Clair County is $71,270, 12% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 25.1%, 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 53 for gas stations (upper middle), #1,033 of 2,358 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 gas stations 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 gas stations · 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.