Auto · County · Illinois
Auto repair and car care businesses in Williamson County, IL
Competitor counts, household spending and official business counts for auto repair and car care businesses in Williamson County, IL, set against other counties and the U.S.
Groundwork market score · out of 100
Score 52 out of 100: Upper middle
Ranked #1,147 of 2,401 scored counties
#32 of 87 scored counties in Illinois
- Listings
- 120
- 31 chain locations (26%)
- Official establishments
- 32
- −3.0% since 2019
- Household spending a year
- $29.6M
- On vehicle maintenance and repairs · $1,021 a household
- Spending per listing
- $246K
- 8% below the U.S.
- Listings per 10k households
- 41.4
- 16% above the U.S.
- Population, 2025
- 67,225
- +0.2% since 2020
See the auto repair and car care businesses around any address in Williamson County
The site report maps the auto repair and car care businesses 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 Williamson 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 $1,021 per household (7% above the U.S. average), households in Williamson County spend about $29.6M a year on vehicle maintenance and repairs. That is about $246K of household spending for each business on map listings, 8% below the U.S. figure of $269K.
Williamson County has 120 auto repair and car care businesses on map listings as of September 2026. 31 of them (26%) are chain locations, against 24% across the U.S. That comes to 41.4 for every 10,000 households, 16% above the U.S. rate of 35.7.
In 2023, official counts showed 32 businesses with payroll in Williamson County classed as automotive repair and maintenance, and tire dealers, down 3.0% from 2019. That is one for every 906 households, against one for every 681 across the U.S. Official counts list 79 one-person businesses without payroll. Since fiscal 2022, 1 SBA-backed loan worth $202K has gone to businesses classed as automotive repair and maintenance, and tire dealers in Williamson County.
Between 2020 and 2025, the population of Williamson County grew 0.2%, slower than the U.S. (+3.1%). For auto repair and car care businesses, Williamson County has a Groundwork market score of 52 (upper middle): #1,147 of 2,401 scored counties and #32 of 87 scored counties in Illinois.
How Williamson County compares
The same measures for Illinois and the whole U.S. Spending per listing divides a year of household spending on all vehicle maintenance and repairs by the auto repair and car care businesses 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 | Williamson County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 41.4 | 33.1 | 35.7 |
| Spending per listing | $246K | $294K | $269K |
| Households per official establishment | 906 | 626 | 681 |
| Official establishment growth, 2019–2023 | −3.0% | +2.0% | +4.1% |
| Population growth, 2020–2025 | +0.2% | −0.6% | +3.1% |
| Spending per household on vehicle maintenance and repairs | $1,021 | $975 | $958 |
| Median household income | $65,604 | $83,390 | $80,734 |
| Groundwork market score | 52 | 44 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 33 → 32−3.0% over the period
- Employees, 2023
- 183
- Annual payroll, 2023
- $7.6M
- One-person businesses, 2023
- 79Businesses with no payroll
- Map listings, September 2026
- 12031 chain locations
- Listings at the U.S. rate for this spending
- 110The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 1
- Amount
- $202K
SBA-backed loans to businesses classed as automotive repair and maintenance, and tire dealers in Williamson 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 Williamson County
- Population, 2025 estimate
- 67,225+0.2% since 2020
- Households
- 28,983
- Median age
- 42.8
- Homes lived in by their owners
- 71%
- Vehicles per household
- 1.8
- Land area
- 420 sq. mi.
- People per square mile
- 159
- Median household income
- $65,604+29.3% vs. 2015–2019, before inflation
- Average household income
- $85,846
- Median home value
- $156,400
- Jobs located here
- 28,604
- Daytime population
- 68,042Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Williamson 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 auto repair and car care businesses on map listings by name and distance.
Or open the report at the center of Williamson County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardAuto repair and car care across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for auto repair and car care businesses, numbered among those based in Illinois, with Williamson County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Piatt County, IL | 83 | 15 | 21.7 | $597K | +0.6% | #73 of 2,401 |
| 2Kendall County, IL | 82 | 133 | 29.3 | $441K | +9.9% | #91 of 2,401 |
| 3Greene County, IL | 74 | 12 | 27.0 | $432K | −5.1% | #243 of 2,401 |
| 4Marshall County, IL | 73 | 17 | 33.4 | $349K | −2.0% | #273 of 2,401 |
| 5Woodford County, IL | 72 | 47 | 32.0 | $383K | −0.8% | #294 of 2,401 |
| 6Boone County, IL | 72 | 69 | 35.5 | $338K | +0.4% | #303 of 2,401 |
| 7Crawford County, IL | 71 | 28 | 37.4 | $306K | +0.1% | #346 of 2,401 |
| 8Lawrence County, IL | 66 | 14 | 25.6 | $403K | −9.7% | #487 of 2,401 |
| 9Menard County, IL | 65 | 14 | 26.8 | $414K | −3.3% | #519 of 2,401 |
| 10Lake County, IL | 65 | 862 | 33.4 | $356K | +0.8% | #524 of 2,401 |
| 32Williamson County, IL | 52 | 120 | 41.4 | $246K | +0.2% | #1,147 of 2,401 |
Other business types in Williamson County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
- Auto repair and car care52
- Auto repair shops57
- Collision repair and body shops52
- Car washes and detailing31
- Tire shops60
- Oil change and quick lube
- Gas stations53
- Insurance agencies16
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many auto repair and car care businesses are in Williamson County, IL?
Map listings as of September 2026 show 120 auto repair and car care businesses in Williamson County. 31 of them (26%) are chain locations. The listings count repair shops, body shops, tire shops, car washes, oil change and parts stores. Official counts show 32 businesses with payroll classed as automotive repair and maintenance, and tire dealers in 2023, down 3.0% from 2019. Official counts also show 79 one-person businesses without payroll.
How much do households in Williamson County, IL spend on vehicle maintenance and repairs?
About $29.6M a year, or $1,021 per household. That is 7% above the U.S. average (an index of 107, where 100 is the U.S. average). Spread across the 120 auto repair and car care businesses on map listings, it comes to $246K per business. It is estimated from the incomes of the 28,983 households in Williamson County and national spending patterns by income.
How does Williamson County, IL compare with the U.S. for auto repair and car care businesses?
Williamson County has 41.4 auto repair and car care businesses per 10,000 households, 16% above the U.S. rate of 35.7. Spending per business is $246K, 8% below the U.S. figure of $269K. At the U.S. ratio of auto repair and car care businesses to household spending, Williamson County would have about 110, against 120 on map listings. There is one business with payroll in the industry for every 906 households, against one for every 681 across the U.S. The official count fell 3.0% from 2019 to 2023, against +4.1% for the U.S.
How fast is Williamson County, IL growing?
Population estimates put Williamson County at 67,225 people in 2025, up 0.2% since 2020, slower than the U.S. (+3.1%). It has 28,983 households. The median household income in Williamson County is $65,604 a year, 19% below the U.S. median of $80,734. That rose 29.3% 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. Williamson County scores 52 for auto repair and car care businesses (upper middle), #1,147 of 2,401 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Williamson County. It maps the auto repair and car care businesses 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 auto repair and car care businesses · All 56 business types in Williamson County
Screening a site or an acquisition in Williamson 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 Williamson 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.