Demographics & People — Union County, South Dakota
Population & Households
| Population (official) | 16,700 |
|---|---|
| Median Age | 40.10 |
| Veterans | 1,005 |
| Housing Units | 7,298 |
| Uninsured | 207 |
Migration
| Inflow | 17,465 |
|---|---|
| Outflow | 17,532 |
| Net | -67 |
| 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 2026-04-13T15:43:30.503719+00:00; aggregated 2026-04-13T16:08:25.604342+00:00.