Demographics & People — Middlesex County, Massachusetts
Population & Households
| Population (official) | 1,623,109 |
|---|---|
| Median Age | 38.80 |
| Veterans | 48,667 |
| Housing Units | 658,555 |
| Uninsured | 5,483 |
Migration
| Inflow | 1,462,463 |
|---|---|
| Outflow | 1,495,378 |
| Net | -32,915 |
| 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 2026-04-13T15:43:28.480455+00:00; aggregated 2026-04-13T16:08:23.678475+00:00.