County · Connecticut · United States
Middlesex County ZIP codes
23 ZIP codes · 22 cities · FIPS 09007
Key facts
- State
- Connecticut (CT)
- FIPS code
- 09007
- Land area
- 369.3 sq mi (956.5 km²)
- Area codes
- 860, 959
Cities and ZIP codes in Middlesex County (22)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.