Southeastern Connecticut Planning Region, Connecticut
Southeastern Connecticut Planning Region is a county equivalent in Connecticut. Its county FIPS code is 09180. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 09180
- Representative coordinates
- 41.484769, -72.101666
- County type
- Planning region
- County seat or government
- No separate county-government seat; this is a statistical county equivalent.
- Resident population, July 2025
- 284,015
- Land area
- 1,549.173 km²
- Water area
- 216.453 km²
- State
- Connecticut
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Southeastern Connecticut Planning Region
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
06226 · 06249 · 06254 · 06256 · 06266 · 06280 · 06320 · 06330 · 06331 · 06333 · 06334 · 06335 · 06336 · 06338 · 06339 · 06340 · 06350 · 06351 · 06353 · 06355 · 06357 · 06359 · 06360 · 06365 · 06370 · 06375 · 06378 · 06379 · 06380 · 06382 · 06385 · 06389 · 06415 · 06420
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Baltic CDP, CT
- Colchester CDP, CT
- Conning Towers-Nautilus Park CDP, CT
- Gales Ferry CDP, CT
- Groton city, CT
- Groton Long Point borough, CT
- Jewett City borough, CT
- Long Hill CDP, CT
- Mashantucket CDP, CT
- Mystic CDP, CT
- New London city, CT
- Niantic CDP, CT
- Noank CDP, CT
- Norwich city, CT
- Old Mystic CDP, CT
- Oxoboxo River CDP, CT
- Pawcatuck CDP, CT
- Poquonock Bridge CDP, CT
- South Windham CDP, CT
- Stonington borough, CT
- Waterford CDP, CT
- Willimantic CDP, CT
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.