Auto · County · Illinois
Gas stations in Mercer County, IL
Competitor counts, household spending and official business counts for gas stations in Mercer County, IL, set against other counties and the U.S.
Groundwork market score · out of 100
Score 54 out of 100: Upper middle
Ranked #983 of 2,358 scored counties
#24 of 82 scored counties in Illinois
- Listings
- 8
- 4 chain locations (50%)
- Official establishments
- 9
- Businesses with payroll, 2023
- Household spending a year
- $20.8M
- On gasoline and other fuels · $3,167 a household
- Spending per listing
- $2.6M
- 9% above the U.S.
- Listings per 10k households
- 12.2
- 12% above the U.S.
- Population, 2025
- 15,229
- −2.6% since 2020
See the gas stations around any address in Mercer 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 Mercer 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 8 gas stations in Mercer County. 4 of them (50%) are chain locations, against 84% across the U.S. That comes to 12.2 for every 10,000 households, 12% above the U.S. rate of 10.9.
Households in Mercer County spend about $20.8M a year on gasoline and other fuels, or $3,167 per household, 22% above the U.S. average. That works out to $2.6M per station, 9% above the U.S. figure of $2.4M.
In 2023, official counts showed 9 businesses with payroll in Mercer County classed as gasoline stations. That is one for every 729 households, against one for every 1,184 across the U.S.
Population estimates put the population change in Mercer County from 2020 to 2025 at −2.6%, against +3.1% for the U.S. For gas stations, Mercer County has a Groundwork market score of 54 (upper middle): #983 of 2,358 scored counties and #24 of 82 scored counties in Illinois.
How Mercer County compares
The same measures for Illinois 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 | Mercer County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 12.2 | 9.2 | 10.9 |
| Spending per listing | $2.6M | $2.6M | $2.4M |
| Households per official establishment | 729 | 1,319 | 1,184 |
| Official establishment growth, 2019–2023 | n/a | +0.4% | −3.1% |
| Population growth, 2020–2025 | −2.6% | −0.6% | +3.1% |
| Spending per household on gasoline and other fuels | $3,167 | $2,409 | $2,595 |
| Median household income | $74,182 | $83,390 | $80,734 |
| Groundwork market score | 54 | 43 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 12 → 9
- Employees, 2023
- 92
- Annual payroll, 2023
- $2.3M
- One-person businesses, 2023
- 0Businesses with no payroll
- Map listings, September 2026
- 84 chain locations
- Listings at the U.S. rate for this spending
- 9The 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 gasoline stations in Mercer 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 Mercer County
- Population, 2025 estimate
- 15,229−2.6% since 2020
- Households
- 6,565
- Median age
- 43.9
- Homes lived in by their owners
- 84%
- Vehicles per household
- 2.2
- Land area
- 561 sq. mi.
- People per square mile
- 28
- Median household income
- $74,182+24.1% vs. 2015–2019, before inflation
- Average household income
- $92,846
- Median home value
- $146,700
- Jobs located here
- 3,052
- Daytime population
- 11,354Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Mercer 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 Mercer 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 Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for gas stations, numbered among those based in Illinois, with Mercer County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Kendall County, IL | 90 | 35 | 7.7 | $4.1M | +9.9% | #26 of 2,358 |
| 2McHenry County, IL | 80 | 97 | 8.2 | $3.7M | +2.5% | #148 of 2,358 |
| 3Will County, IL | 75 | 249 | 10.2 | $3M | +2.2% | #260 of 2,358 |
| 4Piatt County, IL | 74 | 6 | 8.7 | $3.7M | +0.6% | #288 of 2,358 |
| 5Kane County, IL | 74 | 183 | 9.9 | $3M | +1.8% | #296 of 2,358 |
| 6Monroe County, IL | 71 | 9 | 6.5 | $4.7M | −0.3% | #360 of 2,358 |
| 7Champaign County, IL | 69 | 45 | 5.3 | $4.2M | +1.8% | #420 of 2,358 |
| 8Woodford County, IL | 64 | 11 | 7.5 | $4M | −0.8% | #582 of 2,358 |
| 9DuPage County, IL | 64 | 321 | 9.2 | $2.9M | +0.3% | #591 of 2,358 |
| 10Lake County, IL | 62 | 299 | 11.6 | $2.4M | +0.8% | #667 of 2,358 |
| 24Mercer County, IL | 54 | 8 | 12.2 | $2.6M | −2.6% | #983 of 2,358 |
Other business types in Mercer 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 Mercer County, IL?
There are 8 gas stations on map listings in Mercer County as of September 2026. 4 of them (50%) are chain locations. The listings count gas stations. Official counts show 9 businesses with payroll classed as gasoline stations in 2023.
How much do households in Mercer County, IL spend on gasoline and other fuels?
About $20.8M a year, or $3,167 per household. That is 22% above the U.S. average (an index of 122, where 100 is the U.S. average). Spread across the 8 gas stations on map listings, it comes to $2.6M per station. It is estimated from the incomes of the 6,565 households in Mercer County and national spending patterns by income.
How does Mercer County, IL compare with the U.S. for gas stations?
Mercer County has 12.2 gas stations per 10,000 households, 12% above the U.S. rate of 10.9. Spending per station is $2.6M, 9% above the U.S. figure of $2.4M. At the national ratio of gas stations to household spending, Mercer County would have about 9, against 8 on map listings. There is one business with payroll in the industry for every 729 households, against one for every 1,184 across the U.S.
How fast is Mercer County, IL growing?
Population estimates put Mercer County at 15,229 people in 2025, down 2.6% since 2020, against +3.1% for the U.S. It has 6,565 households. The median household income in Mercer County is $74,182 a year, 8% below the U.S. median of $80,734. That rose 24.1% from the 2015–2019 survey, 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. Mercer County scores 54 for gas stations (upper middle), #983 of 2,358 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Mercer 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 Mercer County
Screening a site or an acquisition in Mercer 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 Mercer 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.