Demographics & People — Nassau County, New York
Population & Households
| Population (official) | 1,389,160 |
|---|---|
| Median Age | 41.70 |
| Veterans | 35,821 |
| Housing Units | 476,982 |
| Uninsured | 6,978 |
Migration
| Inflow | 1,342,525 |
|---|---|
| Outflow | 1,361,165 |
| Net | -18,640 |
| 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 2026-04-13T15:43:29.454110+00:00; aggregated 2026-04-13T16:08:24.583022+00:00.