Demographics & People — Marion County, Oregon
Population & Households
| Population (official) | 345,815 |
|---|---|
| Median Age | 37 |
| Veterans | 18,730 |
| Housing Units | 129,065 |
| Uninsured | 3,134 |
Migration
| Inflow | 306,744 |
|---|---|
| Outflow | 309,185 |
| Net | -2,441 |
| 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 2026-04-13T15:43:30.090157+00:00; aggregated 2026-04-13T16:08:25.185823+00:00.