Demographics & People — Mercer County, Ohio
Population & Households
| Population (official) | 42,321 |
|---|---|
| Median Age | 39.40 |
| Veterans | 1,980 |
| Housing Units | 17,898 |
| Uninsured | 222 |
Migration
| Inflow | 41,212 |
|---|---|
| Outflow | 41,800 |
| Net | -588 |
| 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 2026-04-13T15:43:29.862242+00:00; aggregated 2026-04-13T16:08:24.966432+00:00.