Village in Sangamon County, Illinois · 0.3 sq mi · 1,258 people per sq mi
About 430 people live in Buffalo. The typical household earns $56,250, and the median resident is 45.9 years old.
2026 projection
From 446 in 2020
Poverty rate 16.6%
Men 44 · Women 45.9
2010–2026
434
2026 projection
2.7% 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
434
2026 projection
2.7% 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 | 434 | -3 | 0.69% |
|---|---|---|---|
| 2025 | 437 | 0 | 0.00% |
| 2024 | 437 | -1 | 0.23% |
| 2023 | 438 | -2 | 0.45% |
| 2022 | 440 | -3 | 0.68% |
| 2021 | 443 | -3 | 0.67% |
| 2020 | 446 | -30 | 6.30% |
| 2019 | 476 | -5 | 1.04% |
| 2018 | 481 | -4 | 0.82% |
| 2017 | 485 | -4 | 0.82% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 5 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 6 residents
52% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 52% | 58% | 46% |
| Never married | 27% | 26% | 28% |
| Divorced | 14% | 8% | 19% |
| Widowed | 6% | 4% | 8% |
| Separated | 2% | 3% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau