Williamsville, NY demographics:
population, income, and more

Total population
5,469
0.7% year-over-year change
Median household income
$98,850/yr
-7.0% year-over-year change
Housing units
2,856
1.8% year-over-year change

Williamsville population

How many people live in Williamsville

Williamsville is home to 5,469 residents, according to the most recent Census data. Gender-wise, 50.1% of Williamsville locals are male, and 49.9% are female.

Total population
5,469
0.7% year-over-year change
Gender ratio
Male
50.1%
2,739
Female
49.9%
2,730
Value Percent YoY change
Male 2,739 50.1% 2.2%
Female 2,730 49.9% -0.8%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Williamsville is 49, with the population distributed as follows: about 13.4% are children under 15, then 6.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 25.8% of the population, while another 23.6% fall into the 45 to 64 bracket. Finally, around 31% are 65 or older.

Median age
49.2
Age breakdown
Under 15
13.4%
15 to 24
6.3%
25 to 44
25.8%
45 to 64
23.6%
Over 65
31%
Value Percent YoY change
Under 15 732 13.4% -3.8%
15 to 24 345 6.3% 5.2%
25 to 44 1,410 25.8% 3.8%
45 to 64 1,289 23.6% -4.0%
Over 65 1,693 31% 3.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Williamsville, 95.7% of the population are US-born citizens, while 3.5% have gained naturalized citizenship. At the same time, 0.8% of residents are non-citizens. As for race, 91.7% of locals are Caucasian, 2.2% are African American and 0.8% have Asian roots. There’s also a share of 5.3% that includes residents with two or more races.

Citizenship
U.S.-born citizens
95.7%
Non-U.S.-born citizens
3.5%
Non-citizens
0.8%
Value Percent YoY change
U.S.-born citizens 5,235 95.7% -0.1%
Non-U.S.-born citizens 191 3.5% 17.2%
Non-citizens 43 0.8% 59.3%
Racial breakdown
White
91.7%
Black or African American
2.2%
American Indian and Alaska Native
0%
Asian
0.8%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.3%
Other
0.1%
Value Percent
White 5,017 91.7%
Black or African American 118 2.2%
Asian 41 0.8%
Two or more races 288 5.3%
Other 5 0.1%

Households in Williamsville

A peek inside Williamsville households

Williamsville has 2,759 households, with an average of 2 members in each. Of these, 50.4% are families, while the remaining 49.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
2,759
2.6% year-over-year change
Average people per household
2
Non-family households
1,367
Family households
1,392
Value Percent YoY change
Non-family households 1,367 49.6% 4.9%
Family households 1,392 50.4% 0.4%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Williamsville

The housing landscape of Williamsville

Williamsville's housing consists of 2,856 units, with 61.8% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 7% and offer a more compact, shared living style.

Housing units
2,856
1.8% year-over-year change
Housing types
Value Percent
1 unit, detached 1,764 61.8%
1 unit, attached 199 7%
2 units 316 11.1%
3 or 4 units 215 7.5%
5 to 9 units 141 4.9%
10 to 19 units 28 1%
20 to 49 units 31 1.1%
50 or more units 162 5.7%
Homes built since 2020
0
% year-over-year change

The age of buildings in Williamsville

In Williamsville, the median construction year is 1948. About 37.5% of homes were built before the 1940s, with another 14.9% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 1,072 37.5% 9.6%
Built between 1940 and 1949 425 14.9% 9.8%
Built between 1950 and 1959 604 21.2% -19.5%
Built between 1960 and 1969 292 10.2% -12.6%
Built between 1970 and 1979 240 8.4% 26.3%
Built between 1980 and 1989 109 3.8% 45.3%
Built between 1990 and 1999 35 1.2% -38.6%
Built between 2000 and 2009 25 0.9% N/A
Built between 2010 and 2019 54 1.9% 58.8%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Williamsville occupancy rates

Out of the 2,759 occupied housing units in Williamsville, 63.8% are owner-occupied, while 36.2% are lived in by tenants. Meanwhile, 3.4% of all homes on the local market sit vacant.

Occupied housing units
2,759
2.6% year-over-year change
Occupancy breakdown
Renter occupied
1,000
Owner occupied
1,759
Value Percent YoY
change
Renter occupied 1,000 36.2% 14.2%
Owner occupied 1,759 63.8% -3.0%
Unoccupied housing units
3.4%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Williamsville housing costs

Housing costs in Williamsville come to a median of $1,430 per month, while tenants specifically pay a median gross rent of $1,404.

Median housing costs per month
$1,430/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Williamsville
$1,404/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Williamsville

Williamsville education at a glance

About 14.9% of the population in Williamsville went to high school, while 15.7% pursued college studies. Another 8.8% earned an associate degree and 29% hold a bachelor’s. Meanwhile, 31.2% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 20 0.4% 11.1%
High school diploma 677 14.9% -10.1%
College diploma 713 15.7% -6.1%
Associate degree 399 8.8% 23.9%
Bachelor's degree 1,320 29% -3.9%
Graduate degree 1,417 31.2% 8.3%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Williamsville

How much people earn in Williamsville

The average annual household income in Williamsville was $110,563 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -5.2% change from the previous year. At the same time, the median income stood at $98,850, reflecting a -7% shift over the same period.

Average household income in Williamsville
$110,563/year
-5.2% year-over-year change
Median household income in Williamsville
$98,850/year
-7.0% year-over-year change

Williamsville income by age

In Williamsville, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $118,672. Those with someone between 45 and 64 in charge, often well established professionally, earn $110,844 overall. Overall, 94% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $118,672 2.4%
45 - 64 $110,844 3.3%
Over 65 $68,854 -19.2%
Above poverty level
4,948
Below poverty level
313
Value Percent YoY
change
Above poverty level 4,948 94% 0.3%
Below poverty level 313 6% 7.9%

Average renter income in Williamsville

To get a better sense of what renters earn on average in Williamsville, their median household income was $50,990 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 33%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$50,990
Rent-to-income ratio
33%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Williamsville

Workforce and job types in Williamsville

The job market in Williamsville is powered by 2,927 working residents, spread across a range of industries and roles. 95.6% of the working population are employed in professional or administrative positions, while 4.4% are in hands-on or service-based jobs. Also, 9.5% run their own businesses, 61.5% are employed by private companies, and 21.4% work in the public sector.

Workforce demographics

Working population
2,927
-4.2% year-over-year change
White collar
2,797
Blue collar
130
Value Percent YoY change
White collar 2,797 95.6% -3.4%
Blue collar 130 4.4% -19.2%
Employer type
Self employees
9.5%
Private companies
61.5%
Governmental workers
21.4%
Not for profit companies
7.6%
Value Percent YoY change
Self employees 278 9.5% -9.2%
Private companies 1,799 61.5% -0.5%
Governmental workers 626 21.4% 0.5%
Not for profit companies 224 7.6% -29.8%
Unemployment rate
1.4%
-23.6% year-over-year change

Available workforce

The unemployment rate in Williamsville stands at 1.4%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Williamsville

How people get around in Williamsville

Commuting methods vary: 69.7% of residents travel by personal vehicle and 2.7% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 2,011 69.7% -8.8%
Bus or trolleybus 21 0.7% -25.0%
Walk 77 2.7% 42.6%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Williamsville by zipcode?

Zipcode Population Number of households Median income Average income
14221 55,255 24,532 $101,615 $126,287

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FAQs about Williamsville demographics 

What is the total population of Williamsville?

Williamsville has a total population of 5,469 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.7% compared to a year ago.

What is the gender ratio in Williamsville?

The gender ratio in Williamsville is as follows:
  • 50.1% males (2,739 residents)
  • 49.9% females (2,730 residents)

What is the median age in Williamsville?

The median age in Williamsville is 49.2.

What is the age distribution of the population in Williamsville?

The age distribution in Williamsville is as follows:
  • Under 15: 13.4% (732 residents)
  • Ages 15-24: 6.3% (345 residents)
  • Ages 25-44: 25.8% (1,410 residents)
  • Ages 45-64: 23.6% (1,289 residents)
  • Over 65: 31% (1,693 residents)

What is the racial and ethnic makeup of Williamsville?

The racial and ethnic makeup of Williamsville is as follows:
  • White: 91.7% (5,017 residents)
  • Black or African American: 2.2% (118 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0.8% (41 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 5.3% (288 residents)
  • Other: 0.1% (5 residents)

What percentage of the population in Williamsville are U.S.-born citizens?

U.S.-born citizens represent 95.7% of the population in Williamsville.

How many housing units are there in Williamsville?

There are 2,856 housing units in Williamsville, reflecting a +1.8% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Williamsville and what is the average household size?

Williamsville has a total of 2,759 households, with an average of 2 people in each.

What is the median household income in Williamsville?

Williamsville has a median household income of $98,850, representing a -7.0% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Williamsville?

The employment rate is 98.6% in Williamsville, with a workforce of 2,927 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 95.6% (2,797 residents)
  • Blue-collar workers: 4.4% (130 residents)

Places of employment:
  • Self-employed: 9.5% (278 residents)
  • Private companies: 61.5% (1,799 residents)
  • Governmental workers: 21.4% (626 residents)
  • Not-for-profit companies: 7.6% (224 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025