Demographics & People — Jersey County, Illinois
Population & Households
| Population (official) | 21,462 |
|---|---|
| Median Age | 42.80 |
| Veterans | 1,584 |
| Housing Units | 9,834 |
| Uninsured | 59 |
Migration
| Inflow | 19,853 |
|---|---|
| Outflow | 19,817 |
| Net | 36 |
| Growing | Yes |
| 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 2026-04-13T15:43:27.652595+00:00; aggregated 2026-04-13T16:08:22.926279+00:00.