Auto · County · Texas
Car washes and detailers in Williamson County, TX
How Williamson County, TX compares with other counties and the U.S. for car washes and detailers: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 45 out of 100: Lower middle
Ranked #864 of 1,451 scored counties
#43 of 102 scored counties in Texas
- Listings
- 135
- 44 chain locations (33%)
- Official establishments
- 55
- +89.7% since 2019
- Household spending a year
- $244.6M
- On vehicle maintenance and repairs · $969 a household
- Spending per listing
- $1.8M
- 28% below the U.S.
- Listings per 10k households
- 5.4
- 42% above the U.S.
- Population, 2025
- 752,827
- +22.3% since 2020
See the car washes and detailers around any address in Williamson County
The site report maps the car washes and detailers 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 135 car washes and detailers in Williamson County. Chain locations make up 33% of them, against 23% across the U.S. Per 10,000 households, that is 5.4, 42% above the U.S. rate of 3.8.
Households in Williamson County spend about $244.6M a year on vehicle maintenance and repairs, or $969 per household, in line with the U.S. average. That is about $1.8M of household spending for each location on map listings, 28% below the U.S. figure of $2.5M. That spending covers all vehicle maintenance and repairs, which car washes and detailers share with other businesses in the trade.
Official counts show 55 businesses with payroll classed as car washes in Williamson County in 2023, up 89.7% from 2019. That is one for every 4,588 households, against one for every 6,523 across the U.S. Since fiscal 2022, 3 SBA-backed loans worth $237K have gone to businesses classed as car washes in Williamson County.
Between 2020 and 2025, the population of Williamson County grew 22.3%, faster than the U.S. (+3.1%). The Groundwork market score for car washes and detailers in Williamson County is 45 (lower middle), #864 of 1,451 scored counties and #43 of 102 scored counties in Texas.
How Williamson County compares
The same measures for Texas and the whole U.S. Spending per listing divides a year of household spending on all vehicle maintenance and repairs by the car washes and detailers 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 | Texas | U.S. |
|---|---|---|---|
| Listings per 10k households | 5.4 | 4.7 | 3.8 |
| Spending per listing | $1.8M | $2M | $2.5M |
| Households per official establishment | 4,588 | 5,916 | 6,523 |
| Official establishment growth, 2019–2023 | +89.7% | +26.8% | +16.7% |
| Population growth, 2020–2025 | +22.3% | +8.5% | +3.1% |
| Spending per household on vehicle maintenance and repairs | $969 | $918 | $958 |
| Median household income | $111,340 | $78,476 | $80,734 |
| Groundwork market score | 45 | 35 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 29 → 55+89.7% over the period
- Employees, 2023
- 459
- Annual payroll, 2023
- $12.3M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 13544 chain locations
- Listings at the U.S. rate for this spending
- 97The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 3
- Amount
- $237K
SBA-backed loans to businesses classed as car washes 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
- 752,827+22.3% since 2020
- Households
- 252,323
- Median age
- 38.2
- Homes lived in by their owners
- 66%
- Vehicles per household
- 1.9
- Land area
- 1,116 sq. mi.
- People per square mile
- 603
- Median household income
- $111,340+27.5% vs. 2015–2019, before inflation
- Average household income
- $140,407
- Median home value
- $447,000
- Jobs located here
- 238,920
- Daytime population
- 563,844Residents 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 car washes and detailers 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 cardCar washes and detailing across Texas
Every Texas market ranked →The highest-scoring counties in Texas for car washes and detailers, numbered among those based in Texas, with Williamson County marked.
Top counties in Texas
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Cooke County, TX | 79 | 5 | 3.0 | $3.4M | +6.5% | #65 of 1,451 |
| 2Wilson County, TX | 79 | 8 | 4.4 | $2.6M | +12.2% | #72 of 1,451 |
| 3Van Zandt County, TX | 78 | 7 | 3.1 | $3.3M | +10.7% | #81 of 1,451 |
| 4Guadalupe County, TX | 76 | 19 | 2.9 | $3.6M | +15.8% | #108 of 1,451 |
| 5Fort Bend County, TX | 76 | 96 | 3.3 | $3.2M | +17.4% | #110 of 1,451 |
| 6Wise County, TX | 76 | 12 | 4.8 | $2.4M | +21.5% | #115 of 1,451 |
| 7Grayson County, TX | 74 | 20 | 3.6 | $2.6M | +12.8% | #145 of 1,451 |
| 8Wood County, TX | 73 | 6 | 3.2 | $3M | +10.3% | #165 of 1,451 |
| 9Walker County, TX | 72 | 6 | 2.3 | $3.5M | +9.5% | #176 of 1,451 |
| 10Hunt County, TX | 72 | 13 | 3.4 | $2.9M | +23.0% | #183 of 1,451 |
| 43Williamson County, TX | 45 | 135 | 5.4 | $1.8M | +22.3% | #864 of 1,451 |
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 care60
- Auto repair shops64
- Collision repair and body shops59
- Car washes and detailing45
- Tire shops78
- Oil change and quick lube50
- Gas stations81
- Insurance agencies63
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many car washes and detailers are in Williamson County, TX?
There are 135 car washes and detailers on map listings in Williamson County as of September 2026. 44 of them (33%) are chain locations. The listings count car washes and detailers. Official counts show 55 businesses with payroll classed as car washes in 2023, up 89.7% from 2019.
How much do households in Williamson County, TX spend on vehicle maintenance and repairs?
About $244.6M a year, or $969 per household. That is in line with the U.S. average (an index of 101, where 100 is the U.S. average). Spread across the 135 car washes and detailers on map listings, it comes to $1.8M per location. The spending figure covers all vehicle maintenance and repairs, not only car washes and detailers. It is estimated from the incomes of the 252,323 households in Williamson County and national spending patterns by income.
How does Williamson County, TX compare with the U.S. for car washes and detailers?
Williamson County has 5.4 car washes and detailers per 10,000 households, 42% above the U.S. rate of 3.8. Spending per location is $1.8M, 28% below the U.S. figure of $2.5M. At the national ratio of car washes and detailers to household spending, Williamson County would have about 97, against 135 on map listings. There is one business with payroll in the industry for every 4,588 households, against one for every 6,523 across the U.S. The official count rose 89.7% from 2019 to 2023, against +16.7% for the U.S.
How fast is Williamson County, TX growing?
Population estimates put Williamson County at 752,827 people in 2025, up 22.3% since 2020, faster than the U.S. (+3.1%). It has 252,323 households. Median household income in Williamson County is $111,340, 38% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 27.5%, 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 45 for car washes and detailers (lower middle), #864 of 1,451 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 car washes and detailers 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 car washes and detailers · 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.