Auto · County · Missouri
Auto repair shops in St. Charles County, MO
The auto repair shops in St. Charles County, MO, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 74 out of 100: Upper middle
Ranked #232 of 2,378 scored counties
#8 of 85 scored counties in Missouri
- Listings
- 317
- 87 chain locations (27%)
- Official establishments
- 179
- +0.6% since 2019
- Household spending a year
- $193.4M
- On vehicle maintenance and repairs · $1,199 a household
- Spending per listing
- $610K
- 37% above the U.S.
- Listings per 10k households
- 19.7
- 8% below the U.S.
- Population, 2025
- 426,499
- +4.9% since 2020
See the auto repair shops around any address in St. Charles 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 St. Charles 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
For auto repair shops, St. Charles County has a Groundwork market score of 74 (upper middle): #232 of 2,378 scored counties and #8 of 85 scored counties in Missouri. That puts it in the top 10% of counties for auto repair shops.
Map listings as of September 2026 show 317 auto repair shops in St. Charles County. Chain locations make up 27% of them, against 16% across the U.S. That comes to 19.7 for every 10,000 households, 8% below the U.S. rate of 21.5.
Household spending on vehicle maintenance and repairs in St. Charles County comes to about $193.4M a year: $1,199 per household, 25% above the U.S. average. That is about $610K of household spending for each shop on map listings, 37% above 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.
In 2023, official counts showed 179 businesses with payroll in St. Charles County classed as mechanical, body and glass repair, up 0.6% from 2019. That is one for every 901 households, against one for every 955 across the U.S. Since fiscal 2022, 11 SBA-backed loans worth $6.9M have gone to businesses classed as mechanical, body and glass repair in St. Charles County. Between 2020 and 2025, the population of St. Charles County grew 4.9%, faster than the U.S. (+3.1%).
How St. Charles County compares
The same measures for Missouri 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 | St. Charles County | Missouri | U.S. |
|---|---|---|---|
| Listings per 10k households | 19.7 | 22.3 | 21.5 |
| Spending per listing | $610K | $474K | $445K |
| Households per official establishment | 901 | 863 | 955 |
| Official establishment growth, 2019–2023 | +0.6% | +1.6% | +2.1% |
| Population growth, 2020–2025 | +4.9% | +1.9% | +3.1% |
| Spending per household on vehicle maintenance and repairs | $1,199 | $1,058 | $958 |
| Median household income | $104,692 | $70,702 | $80,734 |
| Groundwork market score | 74 | 48 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 178 → 179+0.6% over the period
- Employees, 2023
- 1,082
- Annual payroll, 2023
- $67.1M
- One-person businesses, 2023
- 171Businesses with no payroll
- Map listings, September 2026
- 31787 chain locations
- Listings at the U.S. rate for this spending
- 435The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 11
- Amount
- $6.9M
SBA-backed loans to businesses classed as mechanical, body and glass repair in St. Charles 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 St. Charles County
- Population, 2025 estimate
- 426,499+4.9% since 2020
- Households
- 161,311
- Median age
- 40.8
- Homes lived in by their owners
- 81%
- Vehicles per household
- 2.0
- Land area
- 560 sq. mi.
- People per square mile
- 740
- Median household income
- $104,692+23.2% vs. 2015–2019, before inflation
- Average household income
- $129,305
- Median home value
- $320,800
- Jobs located here
- 167,185
- Daytime population
- 365,581Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Charles 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 St. Charles 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 Missouri
Every Missouri market ranked →The highest-scoring counties in Missouri for auto repair shops, numbered among those based in Missouri, with St. Charles County marked.
Top counties in Missouri
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Platte County, MO | 87 | 68 | 15.5 | $759K | +6.7% | #34 of 2,378 |
| 2Johnson County, MO | 80 | 41 | 19.4 | $588K | +4.9% | #121 of 2,378 |
| 3Texas County, MO | 78 | 17 | 17.9 | $600K | +6.9% | #156 of 2,378 |
| 4Warren County, MO | 77 | 32 | 23.1 | $557K | +9.2% | #178 of 2,378 |
| 5Stone County, MO | 76 | 26 | 19.2 | $576K | +4.1% | #193 of 2,378 |
| 6Cass County, MO | 76 | 94 | 21.8 | $573K | +7.1% | #194 of 2,378 |
| 7Boone County, MO | 75 | 136 | 17.8 | $599K | +4.2% | #216 of 2,378 |
| 8St. Charles County, MO | 74 | 317 | 19.7 | $610K | +4.9% | #232 of 2,378 |
| 9Clay County, MO | 72 | 169 | 16.5 | $671K | +4.3% | #285 of 2,378 |
| 10Wayne County, MO | 71 | 6 | 13.0 | $810K | −1.4% | #303 of 2,378 |
Other business types in St. Charles 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 St. Charles County, MO?
There are 317 auto repair shops on map listings in St. Charles County as of September 2026. 87 of them (27%) are chain locations. The listings count general, specialty, body and glass repair shops. Official counts show 179 businesses with payroll classed as mechanical, body and glass repair in 2023, up 0.6% from 2019. Official counts list 171 one-person businesses without payroll.
How much do households in St. Charles County, MO spend on vehicle maintenance and repairs?
About $193.4M a year, or $1,199 per household. That is 25% above the U.S. average (an index of 125, where 100 is the U.S. average). Spread across the 317 auto repair shops on map listings, it comes to $610K per shop. The spending figure covers all vehicle maintenance and repairs, not only auto repair shops. It is estimated from the incomes of the 161,311 households in St. Charles County and national spending patterns by income.
How does St. Charles County, MO compare with the U.S. for auto repair shops?
St. Charles County has 19.7 auto repair shops per 10,000 households, 8% below the U.S. rate of 21.5. Spending per shop is $610K, 37% above the U.S. figure of $445K. At the national ratio of auto repair shops to household spending, St. Charles County would have about 435, against 317 on map listings. There is one business with payroll in the industry for every 901 households, against one for every 955 across the U.S. The official count rose 0.6% from 2019 to 2023, against +2.1% for the U.S.
How fast is St. Charles County, MO growing?
Population estimates put St. Charles County at 426,499 people in 2025, up 4.9% since 2020, faster than the U.S. (+3.1%). It has 161,311 households. The median household income in St. Charles County is $104,692 a year, 30% above the U.S. median of $80,734. That rose 23.2% 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. St. Charles County scores 74 for auto repair shops (upper middle), #232 of 2,378 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Charles 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 St. Charles County
Screening a site or an acquisition in St. Charles 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 St. Charles 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.