Demographics & People — Jefferson County, Idaho
Population & Households
| Population (official) | 31,383 |
|---|---|
| Median Age | 31.70 |
| Veterans | 1,126 |
| Housing Units | 10,241 |
| Uninsured | 585 |
Migration
| Inflow | 36,192 |
|---|---|
| Outflow | 34,520 |
| Net | 1,672 |
| 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 2026-04-13T15:43:27.544747+00:00; aggregated 2026-04-13T16:08:22.834293+00:00.