City in Williamson County, Illinois · 14.4 sq mi · 1,194 people per sq mi
About 17,000 people live in Marion. The typical household earns $56,912, and the median resident is 42.2 years old.
2026 projection
From 16,836 in 2020
Poverty rate 13.34%
Men 40.6 · Women 43.6
1880–2026
17,194
2026 projection
2.1% since 2020 (increase)
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
17,194
2026 projection
2.1% since 2020 (increase)
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 | 17,194 | +46 | 0.27% |
|---|---|---|---|
| 2025 | 17,148 | +126 | 0.74% |
| 2024 | 17,022 | +165 | 0.98% |
| 2023 | 16,857 | +167 | 1.00% |
| 2022 | 16,690 | -51 | 0.30% |
| 2021 | 16,741 | -95 | 0.56% |
| 2020 | 16,836 | -674 | 3.85% |
| 2019 | 17,510 | -82 | 0.47% |
| 2018 | 17,592 | +17 | 0.10% |
| 2017 | 17,575 | -75 | 0.42% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 168 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 7 residents
44% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 44% | 47% | 41% |
| Never married | 32% | 38% | 26% |
| Divorced | 15% | 10% | 20% |
| Widowed | 8% | 4% | 11% |
| Separated | 1% | 1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau