Auto · County · Illinois
Auto repair shops in Williamson County, IL
How Williamson County, IL compares with other counties and the U.S. for auto repair shops: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 57 out of 100: Upper middle
Ranked #873 of 2,378 scored counties
#22 of 87 scored counties in Illinois
- Listings
- 68
- 9 chain locations (13%)
- Official establishments
- 18
- Businesses with payroll, 2023
- Household spending a year
- $29.6M
- On vehicle maintenance and repairs · $1,021 a household
- Spending per listing
- $435K
- 2% below the U.S.
- Listings per 10k households
- 23.5
- 9% above the U.S.
- Population, 2025
- 67,225
- +0.2% since 2020
See the auto repair shops around any address in Williamson County
The site report maps the auto repair shops 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
Map listings as of September 2026 show 68 auto repair shops in Williamson County. Chain locations make up 13% of them, against 16% across the U.S. That is 23.5 per 10,000 households, 9% above the U.S. rate of 21.5.
Household spending on vehicle maintenance and repairs in Williamson County comes to about $29.6M a year: $1,021 per household, 7% above the U.S. average. That works out to $435K per shop, 2% below the U.S. figure of $445K. That spending covers all vehicle maintenance and repairs, which auto repair shops share with other businesses in the trade.
The official count of businesses with payroll classed as mechanical, body and glass repair in Williamson County was 18 in 2023. That is one for every 1,610 households, against one for every 955 across the U.S. Official counts also show 55 one-person businesses without payroll. Since fiscal 2022, 1 SBA-backed loan worth $202K has gone to businesses classed as mechanical, body and glass repair in Williamson County.
Population estimates show Williamson County grew 0.2% from 2020 to 2025, slower than the U.S. (+3.1%). Williamson County scores 57 (upper middle) on the Groundwork market score for auto repair shops, ranking #873 of 2,378 scored counties and #22 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 shops 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 | 23.5 | 20.3 | 21.5 |
| Spending per listing | $435K | $479K | $445K |
| Households per official establishment | 1,610 | 840 | 955 |
| Official establishment growth, 2019–2023 | n/a | −1.1% | +2.1% |
| 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 | 57 | 38 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 19 → 18
- Employees, 2023
- 116
- Annual payroll, 2023
- $4.9M
- One-person businesses, 2023
- 55Businesses with no payroll
- Map listings, September 2026
- 689 chain locations
- Listings at the U.S. rate for this spending
- 67The 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 mechanical, body and glass repair 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 shops 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 shops across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for auto repair shops, 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 |
|---|---|---|---|---|---|---|
| 1Kendall County, IL | 82 | 78 | 17.2 | $752K | +9.9% | #78 of 2,378 |
| 2Piatt County, IL | 76 | 9 | 13.0 | $994K | +0.6% | #182 of 2,378 |
| 3Woodford County, IL | 70 | 22 | 15.0 | $818K | −0.8% | #330 of 2,378 |
| 4Marshall County, IL | 70 | 8 | 15.7 | $743K | −2.0% | #332 of 2,378 |
| 5Boone County, IL | 69 | 40 | 20.6 | $583K | +0.4% | #375 of 2,378 |
| 6Menard County, IL | 68 | 8 | 15.3 | $725K | −3.3% | #401 of 2,378 |
| 7Crawford County, IL | 67 | 18 | 24.0 | $475K | +0.1% | #477 of 2,378 |
| 8Jersey County, IL | 65 | 16 | 20.1 | $599K | −1.5% | #517 of 2,378 |
| 9Greene County, IL | 64 | 8 | 18.0 | $648K | −5.1% | #550 of 2,378 |
| 10Douglas County, IL | 63 | 11 | 14.2 | $781K | +0.5% | #588 of 2,378 |
| 22Williamson County, IL | 57 | 68 | 23.5 | $435K | +0.2% | #873 of 2,378 |
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
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 shops are in Williamson County, IL?
There are 68 auto repair shops on map listings in Williamson County as of September 2026. 9 of them (13%) are chain locations. The listings count general, specialty, body and glass repair shops. Official counts show 18 businesses with payroll classed as mechanical, body and glass repair in 2023. Another 55 one-person businesses have no payroll, by official counts.
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 68 auto repair shops on map listings, it comes to $435K per shop. The spending figure covers all vehicle maintenance and repairs, not only auto repair shops. 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 shops?
Williamson County has 23.5 auto repair shops per 10,000 households, 9% above the U.S. rate of 21.5. Spending per shop is $435K, 2% below the U.S. figure of $445K. At the national ratio of auto repair shops to household spending, Williamson County would have about 67, against 68 on map listings. There is one business with payroll in the industry for every 1,610 households, against one for every 955 across 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 57 for auto repair shops (upper middle), #873 of 2,378 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 shops 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 shops · 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.