County in Illinois · 387 sq mi · 29 people per sq mi
11,375 people live in Marshall County. The typical household earns $71,585, and the median resident is 46.1 years old.
2026 projection
From 11,713 in 2020
Poverty rate 11.43%
Men 44.9 · Women 46.6
1840–2026
11,375
2026 projection
2.9% 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.
1840–2026
11,375
2026 projection
2.9% 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 | 11,375 | -98 | 0.85% |
|---|---|---|---|
| 2025 | 11,473 | -98 | 0.85% |
| 2024 | 11,571 | -92 | 0.79% |
| 2023 | 11,663 | +5 | 0.04% |
| 2022 | 11,658 | -10 | 0.09% |
| 2021 | 11,668 | -45 | 0.38% |
| 2020 | 11,713 | +250 | 2.18% |
| 2019 | 11,463 | -22 | 0.19% |
| 2018 | 11,485 | -182 | 1.56% |
| 2017 | 11,667 | -220 | 1.85% |
Showing 10 of 33 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 116 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 9 residents
54% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 54% | 55% | 53% |
| Never married | 27% | 29% | 24% |
| Divorced | 11% | 11% | 10% |
| Widowed | 8% | 4% | 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