Real estate · County · Illinois
Real estate agents and brokers in Williamson County, IL
How Williamson County, IL compares with other counties and the U.S. for real estate agents and brokers: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 29 out of 100: Lower middle
Ranked #2,049 of 2,176 scored counties
#78 of 82 scored counties in Illinois
- Listings
- 73
- 3 chain locations (4%)
- Official establishments
- 24
- Businesses with payroll, 2023
- Household spending a year
- $385.2M
- On rent and homeowner costs · $13,291 a household
- Housing spending per listing (U.S. = 100)
- 97
- 3% below the U.S.
- Listings per 10k households
- 25.2
- 18% below the U.S.
- Population, 2025
- 67,225
- +0.2% since 2020
See the real estate agents and brokers around any address in Williamson County
The site report maps the real estate agents and brokers 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
For real estate agents and brokers, Williamson County has a Groundwork market score of 29 (lower middle): #2,049 of 2,176 scored counties and #78 of 82 scored counties in Illinois. That puts it in the bottom quarter of counties.
Map listings as of September 2026 show 73 real estate agents and brokers in Williamson County. Chain locations make up 4% of them, against 4% across the U.S. That comes to 25.2 for every 10,000 households, 18% below the U.S. rate of 30.6.
At $13,291 per household (20% below the U.S. average), households in Williamson County spend about $385.2M a year on rent and homeowner costs. Housing spending per office is 3% below the U.S. figure. That figure is all rent and homeowner costs, used as a measure of housing demand; it is not money real estate agents and brokers take in.
In 2023, official counts showed 24 businesses with payroll in Williamson County classed as offices of real estate agents and brokers. That is one for every 1,208 households, against one for every 788 across the U.S. Population estimates put the population change in Williamson County from 2020 to 2025 at +0.2%, slower than the U.S. (+3.1%).
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 | 25.2 | 25.5 | 30.6 |
| Housing spending per listing (U.S. = 100) | 97 | 107 | 100 |
| Households per official establishment | 1,208 | 1,021 | 788 |
| Official establishment growth, 2019–2023 | n/a | +10.8% | +20.1% |
| 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 | 29 | 41 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 11 → 24
- Employees, 2023
- 36
- Annual payroll, 2023
- $1.2M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 733 chain locations
- Listings at the U.S. rate for this spending
- 71The 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 offices of real estate agents and brokers 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 real estate agents and brokers 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 cardReal estate agents and brokers across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for real estate agents and brokers, 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 |
|---|---|---|---|---|---|---|
| 1Henry County, IL | 69 | 11 | 5.4 | 468 | −2.2% | #229 of 2,176 |
| 2Woodford County, IL | 69 | 10 | 6.8 | 409 | −0.8% | #232 of 2,176 |
| 3Douglas County, IL | 68 | 7 | 9.0 | 282 | +0.5% | #263 of 2,176 |
| 4Bureau County, IL | 66 | 8 | 5.7 | 430 | −2.1% | #314 of 2,176 |
| 5Clinton County, IL | 65 | 19 | 13.0 | 205 | +0.6% | #355 of 2,176 |
| 6Boone County, IL | 63 | 16 | 8.2 | 328 | +0.4% | #409 of 2,176 |
| 7Randolph County, IL | 62 | 12 | 10.0 | 240 | −0.6% | #457 of 2,176 |
| 8Fulton County, IL | 61 | 11 | 8.0 | 295 | −2.0% | #503 of 2,176 |
| 9Kendall County, IL | 61 | 89 | 19.6 | 153 | +9.9% | #530 of 2,176 |
| 10Jersey County, IL | 60 | 9 | 11.3 | 231 | −1.5% | #548 of 2,176 |
| 78Williamson County, IL | 29 | 73 | 25.2 | 97 | +0.2% | #2,049 of 2,176 |
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
- Real estate30
- Real estate agents and brokers29
- Property management
- Mortgage brokers and lenders55
- Home inspectors
Funeral services
Questions
How many real estate agents and brokers are in Williamson County, IL?
There are 73 real estate agents and brokers on map listings in Williamson County as of September 2026. 3 of them (4%) are chain locations. The listings count real estate agents and brokerages, commercial brokers included. Official counts show 24 businesses with payroll classed as offices of real estate agents and brokers in 2023.
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). For the 73 real estate agents and brokers on map listings, housing spending per office is 3% below the U.S. figure. The spending figure is all rent and homeowner costs, a measure of housing demand, not money real estate agents and brokers 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 real estate agents and brokers?
Williamson County has 25.2 real estate agents and brokers per 10,000 households, 18% below the U.S. rate of 30.6. The index of housing spending per office is 97, where 100 is the U.S. At the national ratio of real estate agents and brokers to household spending, Williamson County would have about 71, against 73 on map listings. There is one business with payroll in the industry for every 1,208 households, against one for every 788 across the U.S.
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 scores 29 for real estate agents and brokers (lower middle), #2,049 of 2,176 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Williamson County. It maps the real estate agents and brokers 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 real estate agents and brokers · 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.