The typical owner-occupied home in Williamsville is worth about $199,300, 24% below the Illinois median of $263,300 and 40% below the national median of $332,700. Owners pay a median $4,471 a year in property taxes, about 2.24% of their home's value, higher than the Illinois rate of 2.01%. The median household earns $106,731 a year, so the median home costs 1.9 times the median income (3.2 times for Illinois). 88% of occupied homes here are lived in by their owners, and 72% of those owners still have a mortgage.
Williamsville at a glance
| Williamsville | Illinois | U.S. | |
|---|---|---|---|
| Median home value | $199,300 | $263,300 | $332,700 |
| Median property tax paid per year | $4,471 | $5,298 | $3,119 |
| Property tax as a share of value | 2.24% | 2.01% | 0.94% |
| Median household income | $106,731 | $83,390 | $80,734 |
| Homes lived in by their owners | 88% | 67% | 65% |
| Owner homes with a mortgage | 72% | 61% | 61% |
| Median monthly costs, owners with a mortgage | $1,782 | $1,987 | $1,963 |
| Those costs as a share of the owners' income | 18.8% | 20.6% | 21.0% |
| Median rent | $943 | $1,274 | $1,413 |
| Rent as a share of renters' income | 23.3% | 29.1% | 30.6% |
| Median year homes were built | 1976 | 1971 | 1980 |
| Vacant homes | 2.2% | 7.7% | 10.1% |
| Population | 1,314 | 12,694,798 | 334,922,499 |
What a typical home costs per month in Williamsville
At this week's average 30-year rate of 7.11%, buying the median Williamsville home of $199,300 with 20% down costs about $1,528 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $1,860, because the loan is bigger and FHA adds mortgage insurance.
Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $65,470 for the 20%-down payment. That payment is 17% of the median Williamsville household income of $106,731; at that income and 20% down, the 28% guideline points to a home of about $325,000.
The median rent here is $943 a month, so owning the median home costs about $585 a month more than renting, before you count the equity you build and any tax benefits.
| Down payment | $39,860 |
|---|---|
| Loan amount | $159,440 |
| Principal and interest | $1,073 |
| Property taxes (2.24% a year) | $372 |
| Homeowners insurance (our estimate, 0.5% a year) | $83 |
| PMI | $0 |
| Total per month | $1,528 |
Change the numbers in the calculator
| Down payment | $6,976 |
|---|---|
| Loan amount | $195,690 |
| Principal and interest | $1,316 |
| Property taxes (2.24% a year) | $372 |
| Homeowners insurance (our estimate, 0.5% a year) | $83 |
| FHA mortgage insurance | $88 |
| Total per month | $1,860 |
Change the numbers in the calculator
Questions about home buying in Williamsville
What is the median home value in Williamsville?
About $199,300 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.
How much are property taxes in Williamsville?
Homeowners pay a median $4,471 a year, which is about 2.24% of the median home value. Your bill depends on your home's assessed value and local rates.
What income do you need to buy a home in Williamsville?
For the median home with 20% down at 7.11%, the payment is about $1,528 a month. Keeping that under 28% of gross income takes about $65,470 a year.
More about Williamsville
- Mortgage Refinance in Williamsville
- Debt Relief in Williamsville
- Home Equity Loans in Williamsville
- Guides and quotes for mortgage refinance on our sister site, MortgageRefinance.com
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data