City in Sangamon County, Illinois · 4.1 sq mi · 1,071 people per sq mi
About 4,400 people live in Auburn. The typical household earns $81,411, and the median resident is 40.1 years old.
2026 projection
From 4,542 in 2020
Poverty rate 8.08%
Men 35.9 · Women 44.7
1880–2026
4,416
2026 projection
2.8% 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.
1880–2026
4,416
2026 projection
2.8% 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 | 4,416 | -26 | 0.59% |
|---|---|---|---|
| 2025 | 4,442 | +1 | 0.02% |
| 2024 | 4,441 | -13 | 0.29% |
| 2023 | 4,454 | -23 | 0.51% |
| 2022 | 4,477 | -36 | 0.80% |
| 2021 | 4,513 | -29 | 0.64% |
| 2020 | 4,542 | -86 | 1.86% |
| 2019 | 4,628 | -44 | 0.94% |
| 2018 | 4,672 | -38 | 0.81% |
| 2017 | 4,710 | -43 | 0.90% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 43 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 12 residents
44% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 44% | 53% | 36% |
| Never married | 35% | 33% | 37% |
| Divorced | 14% | 12% | 15% |
| Widowed | 7% | 3% | 11% |
| Separated | <1% | 0% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau