Demographics & People — Marshall County, Illinois
Population & Households
| Population (official) | 11,740 |
|---|---|
| Median Age | 46.20 |
| Veterans | 832 |
| Housing Units | 5,828 |
| Uninsured | 50 |
Migration
| Inflow | 10,999 |
|---|---|
| Outflow | 11,412 |
| Net | -413 |
| Growing | No |
| Year | 2022-2023 |
Source: Census ACS 5-Year 2022. Official numbers: Census ACS 5-Year 2022 — county-level query.
Data provenance: aggregated from town-level sources, county.json. Rebuilt 2026-04-13T15:43:27.698907+00:00; aggregated 2026-04-13T16:08:22.966915+00:00.