Williamsville is a village in Erie County, New York, in the United States. The population was 5,300 at the 2010 census. The village is named after Jonas Williams, an early settler. It is part of the Buffalo–Niagara Falls Metropolitan Statistical Area.
According to the United States Census Bureau, the village has a total area of 1.2 square miles (3.1 km), all land.
Ellicott Creek flows through the village from south to north. The Onondaga Escarpment runs through the village east-west. Glen Falls marks the place where Ellicott Creek falls over the escarpment. An early name for Ellicott Creek was “Eleven Mile Creek”.
Main Street is part of the east–west New York State Route 5 (NY 5). Joseph Ellicott had the “Great Iroquois Trail”, an ancient path from the Hudson River to Lake Erie, improved. It was known as the “Buffalo Road” and, later, “Main Street”. North Union Road, part of NY 277, is a major north-south road through the west end of the village. Transit Road, surveyed by Joseph Ellicott, was named for an important surveying instrument. Transit Road marks the boundary between townships (Amherst and Clarence, Cheektowaga and Lancaster, inter alia. Joseph Ellicott’s surveys of western New York divided the Holland Purchase land into a grid of more or less square of townships with boundaries aligned north-south and east-west, a system related to the Public Land Survey System (PLSS) used in most of the rest of post-colonial America. In western New York, strict accordance to the PLSS was not required or followed, since the land was not federally owned, but had passed directly from the Seneca Indians to land speculators such as the Holland Land Company.
The New York State Thruway (Interstate 90 or I-90) passes through the south part of the village and connects to I-290. A Thruway toll plaza located near the village has been a matter of controversy for years and recent proposals suggest it may be moved farther east.
As of the census of 2010, there were 5,300 people, 2,534 households, 1,252 families residing in the village, 523 with own children under 18 years. The population density was 4,206.3 people per square mile (1,721.4/km²). There were 2,695 housing units at an average density of 2,107.0 per square mile (815.4/km²). The racial makeup of the village was 91.6% White, 4.2% Asian, 2.2% African American, 0.11% Native American, 0.6% from other races, and 1.3% from two or more races. Hispanic or Latino of any race were 1.7% of the population.
There were 2,534 households out of which 14.6% had children under the age of 18 living with them, 36.7% were married couples living together, 9.9% had a female householder with no husband present, and 50.6% were non-families. 44.4% of all households were made up of individuals and 20.5% had someone living alone who was 65 years of age or older. The average household size was 2.01 and the average family size was 2.87.
In the village, the population was spread out with 19.6% under the age of 19, 5.8% from 20 to 24, 26.6% from 25 to 44, 28.2% from 45 to 64, and 23.4% who were 65 years of age or older. The median age range was 45–49 years. The population is 43.7% male and 56.3% female.
According to the 2000 census, The median income for a household in the village was $47,557, and the median income for a family was $65,300. Males had a median income of $43,500 versus $32,172 for females. The per capita income for the village was $27,177. About 2.5% of families and 4.5% of the population were below the poverty line, including 2.7% of those under age 18 and 4.7% of those age 65 or over.
In 2007 it was found that the violent crimes per 1,000 residents were measured at 1.13, where as the national median was 4.0, property crimes (per 1000) were at 16.98, the national average was 29.4, and crimes per square mile were at 13, the national average was at 39.3.