County in Illinois · 413 sq mi · 40 people per sq mi
16,480 people live in Union County. The typical household earns $55,728, and the median resident is 44.3 years old.
2026 projection
From 17,299 in 2020
Poverty rate 20.22%
Men 43.5 · Women 44.9
1820–2026
16,480
2026 projection
4.7% 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.
1820–2026
16,480
2026 projection
4.7% 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 | 16,480 | -176 | 1.06% |
|---|---|---|---|
| 2025 | 16,656 | -176 | 1.05% |
| 2024 | 16,832 | -33 | 0.20% |
| 2023 | 16,865 | -51 | 0.30% |
| 2022 | 16,916 | -133 | 0.78% |
| 2021 | 17,049 | -250 | 1.45% |
| 2020 | 17,299 | +606 | 3.63% |
| 2019 | 16,693 | -160 | 0.95% |
| 2018 | 16,853 | -129 | 0.76% |
| 2017 | 16,982 | -138 | 0.81% |
Showing 10 of 35 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 170 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 5 residents
49% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 49% | 50% | 48% |
| Never married | 27% | 30% | 24% |
| Divorced | 15% | 13% | 16% |
| Widowed | 9% | 6% | 12% |
| Separated | <1% | 1% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
8 sources, all from the U.S. Census Bureau