Real estate · County · Michigan
Home inspectors in St. Clair County, MI
The home inspectors in St. Clair County, MI, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 18 out of 100: Low
Ranked #401 of 415 scored counties
#12 of 15 scored counties in Michigan
- Listings
- 10
- 0 chain locations (0%)
- Official establishments
- 5
- Businesses with payroll, 2023
- Household spending a year
- $927.3M
- On rent and homeowner costs · $13,674 a household
- Housing spending per listing (U.S. = 100)
- 35
- 65% below the U.S.
- Listings per 10k households
- 1.5
- 2.5 times the U.S.
- Population, 2025
- 160,486
- +0.1% since 2020
See the home inspectors around any address in St. Clair 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. Clair 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 home inspectors, St. Clair County has a Groundwork market score of 18 (low): #401 of 415 scored counties and #12 of 15 scored counties in Michigan. That puts it in the bottom quarter of counties.
As of September 2026, map listings count 10 home inspectors in St. Clair County. None of them are chain locations, against 3% across the U.S. That comes to 1.5 for every 10,000 households, 2.5 times the U.S. rate of 0.6.
Household spending on rent and homeowner costs in St. Clair County comes to about $927.3M a year: $13,674 per household, 18% below the U.S. average. Housing spending per business is 65% 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.
In 2023, official counts showed 5 businesses with payroll in St. Clair County classed as building inspection services. That is one for every 13,563 households, against one for every 17,237 across the U.S. Population estimates show St. Clair County grew 0.1% from 2020 to 2025, slower than the U.S. (+3.1%).
How St. Clair County compares
The same measures for Michigan 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. Clair County | Michigan | U.S. |
|---|---|---|---|
| Listings per 10k households | 1.5 | 0.6 | 0.6 |
| Housing spending per listing (U.S. = 100) | 35 | 86 | 100 |
| Households per official establishment | 13,563 | 26,996 | 17,237 |
| Official establishment growth, 2019–2023 | n/a | +3.4% | +6.5% |
| Population growth, 2020–2025 | +0.1% | +0.6% | +3.1% |
| Spending per household on rent and homeowner costs | $13,674 | $13,996 | $16,661 |
| Median household income | $71,270 | $72,875 | $80,734 |
| Groundwork market score | 18 | 36 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 5
- Employees, 2023
- 3
- Annual payroll, 2023
- $370K
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 100 chain locations
- Listings at the U.S. rate for this spending
- 4The 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. Clair 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. Clair County
- Population, 2025 estimate
- 160,486+0.1% since 2020
- Households
- 67,816
- Median age
- 44.6
- Homes lived in by their owners
- 81%
- Vehicles per household
- 1.8
- Land area
- 722 sq. mi.
- People per square mile
- 222
- Median household income
- $71,270+25.1% vs. 2015–2019, before inflation
- Average household income
- $90,621
- Median home value
- $224,600
- Jobs located here
- 41,623
- Daytime population
- 129,372Residents who don’t work, plus everyone whose job is here
Looking at a specific site in St. Clair 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. Clair 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 Michigan
Every Michigan market ranked →The highest-scoring counties in Michigan for home inspectors, numbered among those based in Michigan, with St. Clair County marked.
Top counties in Michigan
| Market | Score | Listings | Per 10k households | Housing spending per listing (U.S. = 100) | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Washtenaw County, MI | 63 | 7 | 0.5 | 126 | −0.4% | #98 of 415 |
| 2Wayne County, MI | 58 | 24 | 0.3 | 146 | −1.1% | #131 of 415 |
| 3Oakland County, MI | 56 | 34 | 0.6 | 95 | +1.2% | #148 of 415 |
| 4Ottawa County, MI | 56 | 8 | 0.7 | 80 | +3.9% | #152 of 415 |
| 5Macomb County, MI | 52 | 23 | 0.6 | 84 | +0.7% | #183 of 415 |
| 6Livingston County, MI | 45 | 9 | 1.2 | 52 | +1.7% | #250 of 415 |
| 7Kent County, MI | 40 | 23 | 0.9 | 62 | +2.5% | #289 of 415 |
| 8Genesee County, MI | 38 | 12 | 0.7 | 70 | −1.1% | #305 of 415 |
| 9Ingham County, MI | 37 | 7 | 0.6 | 85 | +1.7% | #313 of 415 |
| 10Kalamazoo County, MI | 34 | 11 | 1.0 | 52 | +0.8% | #329 of 415 |
| 12St. Clair County, MI | 18 | 10 | 1.5 | 35 | +0.1% | #401 of 415 |
Other business types in St. Clair 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 estate44
- Real estate agents and brokers45
- Property management66
- Mortgage brokers and lenders58
- Home inspectors18
Funeral services
Questions
How many home inspectors are in St. Clair County, MI?
St. Clair County has 10 home inspectors on map listings as of September 2026. None of them are chain locations. The listings count home inspectors. Official counts show 5 businesses with payroll classed as building inspection services in 2023.
How much do households in St. Clair County, MI spend on rent and homeowner costs?
About $927.3M a year, or $13,674 per household. That is 18% below the U.S. average (an index of 82, where 100 is the U.S. average). For the 10 home inspectors on map listings, housing spending per business is 65% 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. It is estimated from the incomes of the 67,816 households in St. Clair County and national spending patterns by income.
How does St. Clair County, MI compare with the U.S. for home inspectors?
St. Clair County has 1.5 home inspectors per 10,000 households, 2.5 times the U.S. rate of 0.6. The index of housing spending per business is 35, where 100 is the U.S. At the national ratio of home inspectors to household spending, St. Clair County would have about 4, against 10 on map listings. There is one business with payroll in the industry for every 13,563 households, against one for every 17,237 across the U.S.
How fast is St. Clair County, MI growing?
Population estimates put St. Clair County at 160,486 people in 2025, up 0.1% since 2020, slower than the U.S. (+3.1%). It has 67,816 households. Median household income in St. Clair County is $71,270, 12% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 25.1%, 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. Clair County scores 18 for home inspectors (low), #401 of 415 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in St. Clair 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. Clair County
Screening a site or an acquisition in St. Clair 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. Clair 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.