Real estate · County · Illinois
Home inspectors in Williamson County, IL
Competitor counts, household spending and official business counts for home inspectors in Williamson County, IL, set against other counties and the U.S.
Groundwork market score
Not scored
The score needs at least 5 listings; this market has 2.
- Listings
- 2
- 0 chain locations (0%)
- Official establishments
- n/a
- Fewer than 3, or not published
- Household spending a year
- $385.2M
- On rent and homeowner costs · $13,291 a household
- Housing spending per listing (U.S. = 100)
- 73
- Too few listings to compare
- Listings per 10k households
- 0.7
- Too few listings to compare
- Population, 2025
- 67,225
- +0.2% since 2020
See the home inspectors around any address in Williamson 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 Williamson 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
Household spending on rent and homeowner costs in Williamson County comes to about $385.2M a year: $13,291 per household, 20% below the U.S. average. The spending figure is all rent and homeowner costs, a measure of housing demand, not money home inspectors take in.
Williamson County has 2 home inspectors on map listings as of September 2026. That is 0.7 per 10,000 households.
Official counts don’t publish a figure for building inspection services in Williamson County, since they leave out counts under 3.
Between 2020 and 2025, the population of Williamson County grew 0.2%, slower than the U.S. (+3.1%). With 2 home inspectors on map listings, Williamson County isn’t given a market score: the score needs at least 5, since one listing more or less would swing it.
How Williamson County compares
The same measures for Illinois 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 | Williamson County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 0.7 | 0.6 | 0.6 |
| Housing spending per listing (U.S. = 100) | 73 | 89 | 100 |
| Households per official establishment | n/a | 21,523 | 17,237 |
| Official establishment growth, 2019–2023 | n/a | −5.3% | +6.5% |
| Population growth, 2020–2025 | +0.2% | −0.6% | +3.1% |
| Spending per household on rent and homeowner costs | $13,291 | $14,866 | $16,661 |
| Median household income | $65,604 | $83,390 | $80,734 |
| Groundwork market score | Not scored | 31 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- n/a
- Employees, 2023
- n/a
- Annual payroll, 2023
- n/a
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 20 chain locations
- Listings at the U.S. rate for this spending
- 2The 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 Williamson 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 Williamson County
- Population, 2025 estimate
- 67,225+0.2% since 2020
- Households
- 28,983
- Median age
- 42.8
- Homes lived in by their owners
- 71%
- Vehicles per household
- 1.8
- Land area
- 420 sq. mi.
- People per square mile
- 159
- Median household income
- $65,604+29.3% vs. 2015–2019, before inflation
- Average household income
- $85,846
- Median home value
- $156,400
- Jobs located here
- 28,604
- Daytime population
- 68,042Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Williamson 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 Williamson 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 Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for home inspectors, numbered among those based in Illinois, with Williamson County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Housing spending per listing (U.S. = 100) | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Cook County, IL | 54 | 113 | 0.5 | 106 | −1.3% | #166 of 415 |
| 2Winnebago County, IL | 52 | 6 | 0.5 | 98 | −0.4% | #180 of 415 |
| 3Kane County, IL | 50 | 12 | 0.6 | 94 | +1.8% | #197 of 415 |
| 4Lake County, IL | 47 | 18 | 0.7 | 92 | +0.8% | #216 of 415 |
| 5McLean County, IL | 46 | 5 | 0.7 | 77 | +0.1% | #230 of 415 |
| 6DuPage County, IL | 46 | 30 | 0.9 | 75 | +0.3% | #232 of 415 |
| 7Kendall County, IL | 44 | 5 | 1.1 | 57 | +9.9% | #257 of 415 |
| 8McHenry County, IL | 41 | 9 | 0.8 | 80 | +2.5% | #272 of 415 |
| 9Madison County, IL | 41 | 8 | 0.7 | 74 | −1.0% | #273 of 415 |
| 10Champaign County, IL | 39 | 6 | 0.7 | 73 | +1.8% | #298 of 415 |
| Williamson County, IL | Not scored | 2 | 0.7 | 73 | +0.2% |
Other business types in Williamson 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 home inspectors are in Williamson County, IL?
Map listings as of September 2026 show 2 home inspectors in Williamson County. The listings count home inspectors. No official count is published for building inspection services in Williamson County: counts under 3 are left out.
How much do households in Williamson County, IL spend on rent and homeowner costs?
About $385.2M a year, or $13,291 per household. That is 20% below the U.S. average (an index of 80, where 100 is the U.S. average). 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 28,983 households in Williamson County and national spending patterns by income.
How does Williamson County, IL compare with the U.S. for home inspectors?
Williamson County has 2 home inspectors on map listings, too few for a steady comparison with the U.S. rate. The count on map listings matches the U.S. ratio of home inspectors to household spending.
How fast is Williamson County, IL growing?
Population estimates put Williamson County at 67,225 people in 2025, up 0.2% since 2020, slower than the U.S. (+3.1%). It has 28,983 households. The median household income in Williamson County is $65,604 a year, 19% below the U.S. median of $80,734. That rose 29.3% 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. Williamson County has no market score for home inspectors: the score needs at least 5 on map listings, and it has 2.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Williamson 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 Williamson County
Screening a site or an acquisition in Williamson 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 Williamson 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.