Auto · County · Louisiana
Car washes and detailers in St. Mary Parish, LA
Competitor counts, household spending and official business counts for car washes and detailers in St. Mary Parish, LA, set against other counties and the U.S.
Groundwork market score · out of 100
Score 8 out of 100: Very low
Ranked #1,434 of 1,451 scored counties
#29 of 31 scored counties in Louisiana
- Listings
- 9
- 3 chain locations (33%)
- Official establishments
- 6
- Businesses with payroll, 2023
- Household spending a year
- $14.1M
- On vehicle maintenance and repairs · $765 a household
- Spending per listing
- $1.6M
- 38% below the U.S.
- Listings per 10k households
- 4.9
- 29% above the U.S.
- Population, 2025
- 46,552
- −5.3% since 2020
See the car washes and detailers around any address in St. Mary Parish
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 St. Mary Parish. 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
St. Mary Parish scores 8 (very low) on the Groundwork market score for car washes and detailers, ranking #1,434 of 1,451 scored counties and #29 of 31 scored counties in Louisiana. That puts it in the bottom quarter of counties.
As of September 2026, map listings count 9 car washes and detailers in St. Mary Parish. 3 of them (33%) are chain locations, against 23% across the U.S. That is 4.9 per 10,000 households, 29% above the U.S. rate of 3.8.
At $765 per household (20% below the U.S. average), households in St. Mary Parish spend about $14.1M a year on vehicle maintenance and repairs. Spread across 9 car washes and detailers, that is $1.6M per location, 38% 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.
The official count of businesses with payroll classed as car washes in St. Mary Parish was 6 in 2023. That is one for every 3,077 households, against one for every 6,523 across the U.S. Population estimates show St. Mary Parish declined 5.3% from 2020 to 2025, against +3.1% for the U.S.
How St. Mary Parish compares
The same measures for Louisiana 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 | St. Mary Parish | Louisiana | U.S. |
|---|---|---|---|
| Listings per 10k households | 4.9 | 4.1 | 3.8 |
| Spending per listing | $1.6M | $1.9M | $2.5M |
| Households per official establishment | 3,077 | 8,473 | 6,523 |
| Official establishment growth, 2019–2023 | n/a | +8.1% | +16.7% |
| Population growth, 2020–2025 | −5.3% | −0.7% | +3.1% |
| Spending per household on vehicle maintenance and repairs | $765 | $802 | $958 |
| Median household income | $52,576 | $60,756 | $80,734 |
| Groundwork market score | 8 | 24 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 6
- Employees, 2023
- 13
- Annual payroll, 2023
- $161K
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 93 chain locations
- Listings at the U.S. rate for this spending
- 6The 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 St. Mary Parish, 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 St. Mary Parish
- Population, 2025 estimate
- 46,552−5.3% since 2020
- Households
- 18,463
- Median age
- 39.8
- Homes lived in by their owners
- 69%
- Vehicles per household
- 1.6
- Land area
- 559 sq. mi.
- People per square mile
- 86
- Median household income
- $52,576+29.9% vs. 2015–2019, before inflation
- Average household income
- $71,245
- Median home value
- $138,900
- Jobs located here
- 20,344
- Daytime population
- 47,916Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Mary Parish?
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 St. Mary Parish. 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 Louisiana
Every Louisiana market ranked →The highest-scoring counties in Louisiana for car washes and detailers, numbered among those based in Louisiana, with St. Mary Parish marked.
Top counties in Louisiana
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Livingston Parish, LA | 61 | 24 | 4.5 | $2M | +8.5% | #450 of 1,451 |
| 2Ascension Parish, LA | 53 | 30 | 6.3 | $1.6M | +6.4% | #665 of 1,451 |
| 3Orleans Parish, LA | 52 | 32 | 2.1 | $3M | −5.5% | #668 of 1,451 |
| 4St. Tammany Parish, LA | 52 | 58 | 5.5 | $1.7M | +5.3% | #692 of 1,451 |
| 5St. Landry Parish, LA | 45 | 7 | 2.2 | $3.4M | −1.9% | #842 of 1,451 |
| 6Bossier Parish, LA | 42 | 24 | 4.7 | $1.8M | +2.5% | #941 of 1,451 |
| 7Tangipahoa Parish, LA | 39 | 20 | 3.8 | $2.2M | +5.8% | #1,004 of 1,451 |
| 8Calcasieu Parish, LA | 39 | 32 | 4.1 | $2.1M | −3.7% | #1,007 of 1,451 |
| 9Beauregard Parish, LA | 36 | 6 | 4.4 | $2.1M | +0.2% | #1,078 of 1,451 |
| 10Rapides Parish, LA | 36 | 20 | 4.1 | $1.9M | −2.9% | #1,084 of 1,451 |
| 29St. Mary Parish, LA | 8 | 9 | 4.9 | $1.6M | −5.3% | #1,434 of 1,451 |
Other business types in St. Mary Parish
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 care6
- Auto repair shops12
- Collision repair and body shops36
- Car washes and detailing8
- Tire shops5
- Oil change and quick lube
- Gas stations19
- Insurance agencies35
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 St. Mary Parish, LA?
St. Mary Parish has 9 car washes and detailers on map listings as of September 2026. 3 of them (33%) are chain locations. The listings count car washes and detailers. Official counts show 6 businesses with payroll classed as car washes in 2023.
How much do households in St. Mary Parish, LA spend on vehicle maintenance and repairs?
About $14.1M a year, or $765 per household. That is 20% below the U.S. average (an index of 80, where 100 is the U.S. average). Spread across the 9 car washes and detailers on map listings, it comes to $1.6M 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 18,463 households in St. Mary Parish and national spending patterns by income.
How does St. Mary Parish, LA compare with the U.S. for car washes and detailers?
St. Mary Parish has 4.9 car washes and detailers per 10,000 households, 29% above the U.S. rate of 3.8. Spending per location is $1.6M, 38% below the U.S. figure of $2.5M. At the national ratio of car washes and detailers to household spending, St. Mary Parish would have about 6, against 9 on map listings. There is one business with payroll in the industry for every 3,077 households, against one for every 6,523 across the U.S.
How fast is St. Mary Parish, LA growing?
Population estimates put St. Mary Parish at 46,552 people in 2025, down 5.3% since 2020, against +3.1% for the U.S. It has 18,463 households. Median household income in St. Mary Parish is $52,576, 35% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 29.9%, 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. St. Mary Parish scores 8 for car washes and detailers (very low), #1,434 of 1,451 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Mary Parish. 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 St. Mary Parish
Screening a site or an acquisition in St. Mary Parish?
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 St. Mary Parish. 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.