Auto · County · Wisconsin
Car washes and detailers in Sauk County, WI
Competitor counts, household spending and official business counts for car washes and detailers in Sauk County, WI, set against other counties and the U.S.
Groundwork market score · out of 100
Score 75 out of 100: High
Ranked #119 of 1,451 scored counties
#8 of 36 scored counties in Wisconsin
- Listings
- 9
- 1 chain location (11%)
- Official establishments
- n/a
- Fewer than 3, or not published
- Household spending a year
- $31.7M
- On vehicle maintenance and repairs · $1,134 a household
- Spending per listing
- $3.5M
- 40% above the U.S.
- Listings per 10k households
- 3.2
- 16% below the U.S.
- Population, 2025
- 66,652
- +1.3% since 2020
See the car washes and detailers around any address in Sauk 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 Sauk 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
Sauk County scores 75 (high) on the Groundwork market score for car washes and detailers, ranking #119 of 1,451 scored counties and #8 of 36 scored counties in Wisconsin. That puts it in the top 10% of counties for car washes and detailers.
At $1,134 per household (18% above the U.S. average), households in Sauk County spend about $31.7M a year on vehicle maintenance and repairs. That works out to $3.5M per location, 40% above the U.S. figure of $2.5M. The spending figure covers all vehicle maintenance and repairs, not only car washes and detailers.
There are 9 car washes and detailers on map listings in Sauk County as of September 2026. One of them (11%) is a chain location, against 23% across the U.S. That comes to 3.2 for every 10,000 households, 16% below the U.S. rate of 3.8.
Official counts don’t publish a figure for car washes in Sauk County, since they leave out counts under 3. Between 2020 and 2025, the population of Sauk County grew 1.3%, slower than the U.S. (+3.1%).
How Sauk County compares
The same measures for Wisconsin 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 | Sauk County | Wisconsin | U.S. |
|---|---|---|---|
| Listings per 10k households | 3.2 | 3.3 | 3.8 |
| Spending per listing | $3.5M | $3.2M | $2.5M |
| Households per official establishment | n/a | 9,500 | 6,523 |
| Official establishment growth, 2019–2023 | n/a | +22.0% | +16.7% |
| Population growth, 2020–2025 | +1.3% | +1.3% | +3.1% |
| Spending per household on vehicle maintenance and repairs | $1,134 | $1,061 | $958 |
| Median household income | $79,541 | $77,485 | $80,734 |
| Groundwork market score | 75 | 74 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- n/a
- Employees, 2023
- n/a
- Annual payroll, 2023
- n/a
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 91 chain location
- Listings at the U.S. rate for this spending
- 13The 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 car washes in Sauk 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 Sauk County
- Population, 2025 estimate
- 66,652+1.3% since 2020
- Households
- 27,987
- Median age
- 42.3
- Homes lived in by their owners
- 72%
- Vehicles per household
- 2.0
- Land area
- 832 sq. mi.
- People per square mile
- 79
- Median household income
- $79,541+32.7% vs. 2015–2019, before inflation
- Average household income
- $98,005
- Median home value
- $258,600
- Jobs located here
- 36,015
- Daytime population
- 65,185Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Sauk 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 Sauk 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 Wisconsin
Every Wisconsin market ranked →The highest-scoring counties in Wisconsin for car washes and detailers, numbered among those based in Wisconsin, with Sauk County marked.
Top counties in Wisconsin
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Walworth County, WI | 84 | 11 | 2.6 | $4.7M | +0.8% | #39 of 1,451 |
| 2Oconto County, WI | 84 | 6 | 3.6 | $3.5M | +2.9% | #40 of 1,451 |
| 3Portage County, WI | 80 | 8 | 2.7 | $4.2M | +2.2% | #56 of 1,451 |
| 4Washington County, WI | 80 | 19 | 3.3 | $3.5M | +1.8% | #58 of 1,451 |
| 5Dane County, WI | 78 | 73 | 2.9 | $3.4M | +4.9% | #77 of 1,451 |
| 6Manitowoc County, WI | 77 | 10 | 2.8 | $3.8M | +0.4% | #92 of 1,451 |
| 7Dunn County, WI | 77 | 6 | 3.4 | $3.4M | +1.7% | #95 of 1,451 |
| 8Sauk County, WI | 75 | 9 | 3.2 | $3.5M | +1.3% | #119 of 1,451 |
| 9Marathon County, WI | 75 | 21 | 3.6 | $3.1M | +1.0% | #127 of 1,451 |
| 10Rock County, WI | 75 | 25 | 3.7 | $2.9M | +1.7% | #128 of 1,451 |
Other business types in Sauk 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 care58
- Auto repair shops54
- Collision repair and body shops49
- Car washes and detailing75
- Tire shops79
- Oil change and quick lube
- Gas stations39
- Insurance agencies36
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 Sauk County, WI?
As of September 2026, map listings count 9 car washes and detailers in Sauk County. One of them (11%) is a chain location. The listings count car washes and detailers. No official count is published for car washes in Sauk County: counts under 3 are left out.
How much do households in Sauk County, WI spend on vehicle maintenance and repairs?
About $31.7M a year, or $1,134 per household. That is 18% above the U.S. average (an index of 118, where 100 is the U.S. average). Spread across the 9 car washes and detailers on map listings, it comes to $3.5M per location. That spending covers all vehicle maintenance and repairs, which car washes and detailers share with other businesses in the trade. It is estimated from the incomes of the 27,987 households in Sauk County and national spending patterns by income.
How does Sauk County, WI compare with the U.S. for car washes and detailers?
Sauk County has 3.2 car washes and detailers per 10,000 households, 16% below the U.S. rate of 3.8. Spending per location is $3.5M, 40% above the U.S. figure of $2.5M. At the U.S. ratio of car washes and detailers to household spending, Sauk County would have about 13, against 9 on map listings.
How fast is Sauk County, WI growing?
Population estimates put Sauk County at 66,652 people in 2025, up 1.3% since 2020, slower than the U.S. (+3.1%). It has 27,987 households. The median household income in Sauk County is $79,541 a year, in line with the U.S. median of $80,734. That rose 32.7% 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. Sauk County scores 75 for car washes and detailers (high), #119 of 1,451 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Sauk 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 Sauk County
Screening a site or an acquisition in Sauk 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 Sauk 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.