Village in Sangamon County, Illinois · 1.5 sq mi · 927 people per sq mi
About 1,400 people live in Williamsville. The typical household earns $106,731, and the median resident is 43.4 years old.
2026 projection
From 1,439 in 2020
Poverty rate 6.88%
Men 36.6 · Women 47.2
2010–2026
1,436
2026 projection
0.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
1,436
2026 projection
0.2% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 1,436 | -1 | 0.07% |
|---|---|---|---|
| 2025 | 1,437 | +2 | 0.14% |
| 2024 | 1,435 | +1 | 0.07% |
| 2023 | 1,434 | -1 | 0.07% |
| 2022 | 1,435 | -5 | 0.35% |
| 2021 | 1,440 | +1 | 0.07% |
| 2020 | 1,439 | -48 | 3.23% |
| 2019 | 1,487 | -6 | 0.40% |
| 2018 | 1,493 | -3 | 0.20% |
| 2017 | 1,496 | +7 | 0.47% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 13 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 15 residents
65% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 65% | 65% | 65% |
| Never married | 19% | 29% | 10% |
| Divorced | 9% | 4% | 14% |
| Widowed | 7% | 2% | 11% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau