Illinois · Census place 1781854

Williamsville, Illinois

Williamsville is a village in Sangamon County, Illinois with an estimated 1,441 residents on July 1, 2024. It is the 551st largest of 651 incorporated places of 1,000+ people in the state.

Population 2024: 1,441; #551 of 651 in Illinois
Change since 2020: +0.1%; +1 people
Land area: 1.6 sq mi; + 0.03 sq mi water
Density: 930 / sq mi; State median 2,177

Orange pin: Williamsville. Shaded: its county. Dark pin: Springfield.

Measure from here

Tools and pages that start from Williamsville

Williamsville population, 2020 to 2024

Williamsville added 1 residents from July 2020 to July 2024, a change of +0.1%. In the latest year it moved by +4.

July 1 estimates. The April 2020 estimates base was 1,437. The axis starts above zero so yearly changes are visible.

Williamsville covers 1.55 square miles of land and 0.03 of water, for 930 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Williamsville is less dense than the typical town.

What county Williamsville is in

All of Williamsville's residents live in Sangamon County, which had 194,345 residents in 2024. Williamsville holds 0.7% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Williamsville

1 ZIP Code Tabulation Area (ZCTA) overlaps Williamsville by at least 10% of the ZCTA's or the village's land: 62693. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a village that annexed land after 2020 may reach into ZIP codes not listed here.

Where Williamsville is

The Census internal point of Williamsville is at 39.956100, -89.543600. Springfield, the capital, is 13.3 miles SSW in a straight line. The nearest larger place is Sherman, IL (4,634 people), 5.6 miles away. The nearest city of 100,000 or more is Springfield, IL, 12.6 miles away.

Internal point

Decimal: 39.956100, -89.543600
DMS: 39°57'21.96"N 89°32'36.96"W
UTM: 16N 282727.4E 4425983.1N
Geohash: dp0763u34
Plus code: 86FGXF44+CH

Daylight in Williamsville

At 39.96° N, Williamsville gets about 15 h 01 min of daylight around the June solstice and 9 h 20 min around the December solstice, a swing of 5 h 41 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Williamsville

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Sherman, 5.6 miles away, with 4,634 people.

Questions people ask

What is the population of Williamsville, IL?

1,441 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 1 (0.1%) from 1,440 in July 2020.

What county is Williamsville in?

Sangamon County. All of its residents live in that county.

What ZIP codes cover Williamsville?

1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 62693.

How far is Williamsville from Springfield?

13.3 miles (21.5 km) in a straight line, heading SSW from Williamsville.

What is the nearest larger city to Williamsville?

Sherman, IL, with 4,634 residents, 5.6 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

How every number is computed: methodology. Spotted a wrong figure? Report an error.