Real estate · County · Missouri
Home inspectors in St. Louis County, MO
Competitor counts, household spending and official business counts for home inspectors in St. Louis County, MO, set against other counties and the U.S.
Groundwork market score · out of 100
Score 45 out of 100: Lower middle
Ranked #239 of 415 scored counties
#3 of 8 scored counties in Missouri
- Listings
- 28
- 3 chain locations (11%)
- Official establishments
- 23
- Businesses with payroll, 2023
- Household spending a year
- $6.2B
- On rent and homeowner costs · $15,102 a household
- Housing spending per listing (U.S. = 100)
- 85
- 15% below the U.S.
- Listings per 10k households
- 0.7
- 17% above the U.S.
- Population, 2025
- 990,911
- −1.2% since 2020
See the home inspectors around any address in St. Louis 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. Louis 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 $15,102 per household (9% below the U.S. average), households in St. Louis County spend about $6.2B a year on rent and homeowner costs. Housing spending per business is 15% 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.
There are 28 home inspectors on map listings in St. Louis County as of September 2026. 3 of them (11%) are chain locations, against 3% across the U.S. That is 0.7 per 10,000 households, 17% above the U.S. rate of 0.6.
Official counts show 23 businesses with payroll classed as building inspection services in St. Louis County in 2023. That is one for every 17,993 households, against one for every 17,237 across the U.S.
Population estimates put the population change in St. Louis County from 2020 to 2025 at −1.2%, against +3.1% for the U.S. For home inspectors, St. Louis County has a Groundwork market score of 45 (lower middle): #239 of 415 scored counties and #3 of 8 scored counties in Missouri.
How St. Louis 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. Louis County | Missouri | U.S. |
|---|---|---|---|
| Listings per 10k households | 0.7 | 0.6 | 0.6 |
| Housing spending per listing (U.S. = 100) | 85 | 83 | 100 |
| Households per official establishment | 17,993 | 20,228 | 17,237 |
| Official establishment growth, 2019–2023 | n/a | +18.1% | +6.5% |
| Population growth, 2020–2025 | −1.2% | +1.9% | +3.1% |
| Spending per household on rent and homeowner costs | $15,102 | $13,809 | $16,661 |
| Median household income | $82,936 | $70,702 | $80,734 |
| Groundwork market score | 45 | 25 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 19 → 23
- Employees, 2023
- 420
- Annual payroll, 2023
- $50.8M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 283 chain locations
- Listings at the U.S. rate for this spending
- 24The 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 building inspection services in St. Louis 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. Louis County
- Population, 2025 estimate
- 990,911−1.2% since 2020
- Households
- 413,849
- Median age
- 41.2
- Homes lived in by their owners
- 69%
- Vehicles per household
- 1.7
- Land area
- 509 sq. mi.
- People per square mile
- 1,958
- Median household income
- $82,936+23.0% vs. 2015–2019, before inflation
- Average household income
- $123,036
- Median home value
- $276,800
- Jobs located here
- 655,776
- Daytime population
- 1,175,839Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Louis 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. Louis 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. Louis 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. Louis 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 estate25
- Real estate agents and brokers27
- Property management36
- Mortgage brokers and lenders23
- Home inspectors45
Funeral services
Questions
How many home inspectors are in St. Louis County, MO?
As of September 2026, map listings count 28 home inspectors in St. Louis County. 3 of them (11%) are chain locations. The listings count home inspectors. Official counts show 23 businesses with payroll classed as building inspection services in 2023.
How much do households in St. Louis County, MO spend on rent and homeowner costs?
About $6.2B a year, or $15,102 per household. That is 9% below the U.S. average (an index of 91, where 100 is the U.S. average). For the 28 home inspectors on map listings, housing spending per business is 15% 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 413,849 households in St. Louis County and national spending patterns by income.
How does St. Louis County, MO compare with the U.S. for home inspectors?
St. Louis County has 0.7 home inspectors per 10,000 households, 17% above the U.S. rate of 0.6. The index of housing spending per business is 85, where 100 is the U.S. At the U.S. ratio of home inspectors to household spending, St. Louis County would have about 24, against 28 on map listings. There is one business with payroll in the industry for every 17,993 households, against one for every 17,237 across the U.S.
How fast is St. Louis County, MO growing?
Population estimates put St. Louis County at 990,911 people in 2025, down 1.2% since 2020, against +3.1% for the U.S. It has 413,849 households. The median household income in St. Louis County is $82,936 a year, 3% above the U.S. median of $80,734. That rose 23.0% 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. Louis County scores 45 for home inspectors (lower middle), #239 of 415 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Louis 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. Louis County
Screening a site or an acquisition in St. Louis 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. Louis 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.