Williamsville, IL
Population 1,519 · Illinois
About Williamsville, IL
Williamsville is a small town located in Illinois with a population of 1,519 residents according to the latest US Census Bureau American Community Survey data. The median household income is $104,135 per year, which is 39% above the national median of $75,149. The median age of 44.1 years is notably older the US median age of 38.9 years, suggesting a more established community with a higher proportion of long-term residents.
Housing Market Overview
The housing market in Williamsville features a median home value of $187,000, which is 24% below the national median of $244,900. This positions Williamsville in a moderately priced market relative to the rest of the country. Median monthly rent is $1,055, 9% below the national average of $1,163/month. Of the 656 total housing units, 86% are owner-occupied (555 units) and 14% are renter-occupied (89 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in Williamsville shows an unemployment rate of 1.8%, which is lower than the national rate of 3.7%, indicating a relatively strong job market. The poverty rate stands at 7.5%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in Williamsville have an average one-way commute time of 21.1 minutes.
Education & Demographics
39.5% of Williamsville residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This is in line with national trends in educational attainment. The community's demographic composition includes 1.4% White, 0.3% Hispanic or Latino, 0.0% Black or African American, and 0.0% Asian residents, with 1.9% of the population being foreign-born.
Cost of Living in Williamsville, IL
Compared to national averages, Williamsville has a median household income of $104,135 (39% above the national median of $75,149). Home values average $187,000, which is 24% below the national median. Monthly rent at $1,055 is 9% below the US average of $1,163. Within Illinois, Williamsville's income is 39% above the state average of $75,072, and home values are 13% above the state median of $165,779.
Why Live in Williamsville, IL?
Williamsville offers a strong local economy with a median household income of $104,135, well above the national average, and affordable housing with a median home value of $187,000, below the US average of $244,900, and rent that’s lower than the national average at $1,055/month. Additionally, the city features a strong job market with an unemployment rate of just 1.8%, and a well-educated community where 39.5% of residents hold a bachelor’s degree or higher, and a low poverty rate of 7.5%, better than the national average, and short commute times averaging just 21.1 minutes.
Williamsville has a population of 1,519 with a median age of 44.1 years. Compare Williamsville with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Williamsville
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Grayville | 1,515 | $47,308 | $76,000 | Compare |
| Mount Carroll | 1,515 | $59,167 | $88,800 | Compare |
| Mount Pulaski | 1,513 | $70,175 | $113,400 | Compare |
| Harristown | 1,526 | $74,018 | $116,700 | Compare |
| Thomson | 1,526 | $54,063 | $122,300 | Compare |
| Warsaw | 1,511 | $58,074 | $90,700 | Compare |
| Lanark | 1,510 | $66,250 | $97,100 | Compare |
| Malta | 1,507 | $83,611 | $178,900 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
Compare Williamsville With Other Cities
Frequently Asked Questions about Williamsville
What is the population of Williamsville, IL?
The population of Williamsville, IL is 1,519 according to the latest US Census Bureau American Community Survey estimates. This makes it a small town in Illinois.
What is the median household income in Williamsville?
The median household income in Williamsville, IL is $104,135 per year, which is 39% above the national median of $75,149.
What is the median home value in Williamsville?
The median home value in Williamsville, IL is $187,000, which is 24% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in Williamsville?
The median monthly rent in Williamsville, IL is $1,055, which is 9% below the national average of $1,163/month.
What is the unemployment rate in Williamsville?
The unemployment rate in Williamsville, IL is 1.8%, compared to the national average of 3.7%. This lower-than-average rate suggests a relatively healthy local job market.
Is Williamsville, IL a good place to live?
Williamsville offers above-average incomes, affordable housing, and a strong job market. With a population of 1,519 and a median age of 44.1, the city appeals to a broad range of residents.
How educated is Williamsville, IL?
39.5% of residents in Williamsville aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This above-average educational attainment often reflects a knowledge-based local economy.
What is the cost of living in Williamsville?
Key cost-of-living indicators for Williamsville, IL: median home value is $187,000 (24% below national), median rent is $1,055/month, and median household income is $104,135. The home-value-to-income ratio is 1.8x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in Williamsville?
The poverty rate in Williamsville, IL is 7.5%, compared to the national average of 12.4%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is Williamsville, IL?
Williamsville's population is 1.4% White, 0.3% Hispanic or Latino, 0.0% Black or African American, 0.0% Asian, and 1.6% two or more races. 1.9% of residents are foreign-born.