Demographics & People — Merrimack County, New Hampshire
Population & Households
| Population (official) | 153,918 |
|---|---|
| Median Age | 42.80 |
| Veterans | 10,221 |
| Housing Units | 65,744 |
| Uninsured | 1,048 |
Migration
| Inflow | 148,061 |
|---|---|
| Outflow | 146,101 |
| Net | 1,960 |
| 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 2026-04-13T15:43:29.169557+00:00; aggregated 2026-04-13T16:08:24.327591+00:00.