Real estate · County · Missouri
Home inspectors in St. Charles County, MO
The home inspectors 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 40 out of 100: Lower middle
Ranked #287 of 415 scored counties
#4 of 8 scored counties in Missouri
- Listings
- 15
- 1 chain location (7%)
- Official establishments
- 18
- Businesses with payroll, 2023
- Household spending a year
- $2.6B
- On rent and homeowner costs · $16,029 a household
- Housing spending per listing (U.S. = 100)
- 66
- 34% below the U.S.
- Listings per 10k households
- 0.9
- 50% above the U.S.
- Population, 2025
- 426,499
- +4.9% since 2020
See the home inspectors around any address in St. Charles County
The site report maps the home inspectors 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
At $16,029 per household (4% below the U.S. average), households in St. Charles County spend about $2.6B a year on rent and homeowner costs. Housing spending per business is 34% below the U.S. figure. The spending figure is all rent and homeowner costs, a measure of housing demand, not money home inspectors take in.
St. Charles County has 15 home inspectors on map listings as of September 2026. One of them (7%) is a chain location, against 3% across the U.S. Per 10,000 households, that is 0.9, 50% above the U.S. rate of 0.6.
In 2023, official counts showed 18 businesses with payroll in St. Charles County classed as building inspection services. That is one for every 8,962 households, against one for every 17,237 across the U.S. Since fiscal 2022, 1 SBA-backed loan worth $20K has gone to businesses classed as building inspection services in St. Charles County.
Population estimates put the population change in St. Charles County from 2020 to 2025 at +4.9%, faster than the U.S. (+3.1%). St. Charles County scores 40 (lower middle) on the Groundwork market score for home inspectors, ranking #287 of 415 scored counties and #4 of 8 scored counties in Missouri.
How St. Charles County compares
The same measures for Missouri and the whole U.S. Housing spending per listing divides all rent and homeowner costs by the listings counted: a measure of housing demand for each business, not money any of them take in, so it is shown against the U.S. (100) only. Households per establishment divides households by the official count.
| Measure | St. Charles County | Missouri | U.S. |
|---|---|---|---|
| Listings per 10k households | 0.9 | 0.6 | 0.6 |
| Housing spending per listing (U.S. = 100) | 66 | 83 | 100 |
| Households per official establishment | 8,962 | 20,228 | 17,237 |
| Official establishment growth, 2019–2023 | n/a | +18.1% | +6.5% |
| Population growth, 2020–2025 | +4.9% | +1.9% | +3.1% |
| Spending per household on rent and homeowner costs | $16,029 | $13,809 | $16,661 |
| Median household income | $104,692 | $70,702 | $80,734 |
| Groundwork market score | 40 | 25 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 17 → 18
- Employees, 2023
- 24
- Annual payroll, 2023
- $1.3M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 151 chain location
- Listings at the U.S. rate for this spending
- 10The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 1
- Amount
- $20K
SBA-backed loans to businesses classed as building inspection services 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 home inspectors 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 cardHome inspectors across Missouri
Every Missouri market ranked →The highest-scoring counties in Missouri for home inspectors, numbered among those based in Missouri, with St. Charles County marked.
Top counties in Missouri
| Market | Score | Listings | Per 10k households | Housing spending per listing (U.S. = 100) | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Jefferson County, MO | 52 | 5 | 0.6 | 96 | +2.7% | #181 of 415 |
| 2Jackson County, MO | 49 | 17 | 0.6 | 94 | +2.1% | #204 of 415 |
| 3St. Louis County, MO | 45 | 28 | 0.7 | 85 | −1.2% | #239 of 415 |
| 4St. Charles County, MO | 40 | 15 | 0.9 | 66 | +4.9% | #287 of 415 |
| 5Clay County, MO | 36 | 9 | 0.9 | 64 | +4.3% | #320 of 415 |
| 6Greene County, MO | 32 | 15 | 1.1 | 43 | +3.3% | #348 of 415 |
| 7Boone County, MO | 25 | 13 | 1.7 | 31 | +4.2% | #391 of 415 |
| 8Taney County, MO | 9 | 8 | 3.5 | 14 | +1.7% | #412 of 415 |
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
- Real estate45
- Real estate agents and brokers47
- Property management67
- Mortgage brokers and lenders46
- Home inspectors40
Funeral services
Questions
How many home inspectors are in St. Charles County, MO?
Map listings as of September 2026 show 15 home inspectors in St. Charles County. One of them (7%) is a chain location. The listings count home inspectors. Official counts show 18 businesses with payroll classed as building inspection services in 2023.
How much do households in St. Charles County, MO spend on rent and homeowner costs?
About $2.6B a year, or $16,029 per household. That is 4% below the U.S. average (an index of 96, where 100 is the U.S. average). For the 15 home inspectors on map listings, housing spending per business is 34% below the U.S. figure. That figure is all rent and homeowner costs, used as a measure of housing demand; it is not money home inspectors take in. 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 home inspectors?
St. Charles County has 0.9 home inspectors per 10,000 households, 50% above the U.S. rate of 0.6. The index of housing spending per business is 66, where 100 is the U.S. At the U.S. ratio of home inspectors to household spending, St. Charles County would have about 10, against 15 on map listings. There is one business with payroll in the industry for every 8,962 households, against one for every 17,237 across 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 40 for home inspectors (lower middle), #287 of 415 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 home inspectors 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 home inspectors · 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.