Demographics & People — Clinton County, Illinois
Population & Households
| Population (official) | 36,998 |
|---|---|
| Median Age | 41 |
| Veterans | 2,741 |
| Housing Units | 15,628 |
| Uninsured | 525 |
Migration
| Inflow | 34,599 |
|---|---|
| Outflow | 35,050 |
| Net | -451 |
| 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 2026-04-13T15:43:27.584871+00:00; aggregated 2026-04-13T16:08:22.868645+00:00.