Southeastern Connecticut Planning Region ZIP Codes
Southeastern Connecticut Planning Region is a planning region of Connecticut.
- ZIP codes
- 36
- Cities & towns
- 35
- Area codes
- 2
- Land area
- 598 sq mi
Every ZIP code in Southeastern Connecticut Planning Region
| ZIP code | City |
|---|---|
| 06226 | Willimantic |
| 06249 | Lebanon |
| 06254 | North Franklin |
| 06256 | North Windham |
| 06266 | South Windham |
| 06280 | Windham |
| 06320 | New London |
| 06330 | Baltic |
| 06335 | Gales Ferry |
| 06336 | Gilman |
| 06338 | Mashantucket |
| 06339 | Ledyard |
| 06340 | Groton |
| 06349 | Groton |
| 06350 | Hanover |
| 06351 | Jewett City |
| 06353 | Montville |
| 06355 | Mystic |
| 06357 | Niantic |
| 06359 | North Stonington |
| 06360 | Norwich |
| 06365 | Preston |
| 06370 | Oakdale |
| 06372 | Old Mystic |
| 06375 | Quaker Hill |
| 06378 | Stonington |
| 06379 | Pawcatuck |
| 06380 | Taftville |
| 06382 | Uncasville |
| 06383 | Versailles |
| 06385 | Waterford |
| 06388 | West Mystic |
| 06389 | Yantic |
| 06415 | Colchester |
| 06420 | Salem |
| 06474 | North Westchester |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Southeastern Connecticut Planning Region codes above are listed without a column we would have to invent.
Cities and towns in Southeastern Connecticut Planning Region
A further 29 places in Southeastern Connecticut Planning Region appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Southeastern Connecticut Planning Region
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the planning region without matching its edges.
Where Southeastern Connecticut Planning Region's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Southeastern Connecticut Planning Region. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.