| 02804 Ashaway | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02804 Hopkinton | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02808 Bradford | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02808 Westerly | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02808 Hopkinton | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02832 Hope Valley | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02832 Hopkinton | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02832 Richmond | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02833 Hopkinton | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02873 Hopkinton | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02873 Rockville | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02891 Watch Hill | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02891 Misquamicut | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 02891 Westerly | 401 | Washington County | Rhode Island - RI | New London-Norwich, CT-RI (5520) | MSA |
| 06254 North Franklin | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06254 Franklin Hill | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06254 Franklin | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06320 U S Coast Guard Acadamy | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06320 Fort Trumbull | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06320 United States Coast Guard Acadamy | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06320 New London | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06330 Sprague | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06330 Baltic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06331 South Canterbury | 860/959 | Windham County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06331 Canterbury | 860/959 | Windham County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06332 Central Village | 860/959 | Windham County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06333 East Lyme | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06334 Bozrah | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06334 Fitchville | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06335 Gales Ferry | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06336 Gilman | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06339 Ledyard | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06339 Gales Ferry | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06340 Noank | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06340 Borough | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06340 Center Groton | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06340 Groton | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06340 Groton Long Point | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06340 Poquonock Bridge | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06340 Jupiter Point | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06349 Sub Base New London | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06349 Groton | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06349 Naval Submarine Base | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06349 Navsub Base | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06349 Submarine Base | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06350 Hanover | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06351 Canterbury | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06351 Baltic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06351 Griswold | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06351 Hopeville | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06351 Preston | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06351 Lisbon | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06351 Jewett City | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06353 Montville | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06354 Moosup | 860/959 | Windham County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06355 Masons Island | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06355 Mystic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06357 Niantic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06359 North Stonington | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06360 Norwich | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06360 Poquetanuck | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06360 Norwichtown | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06360 Occum | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06365 Preston | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06365 Norwich | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06370 Chesterfield | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06370 Oakdale | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06371 Old Lyme | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06371 Lyme | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06371 North Lyme | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06372 Old Mystic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06374 Plainfield | 860/959 | Windham County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06375 Quaker Hill | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06376 Point O Woods | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06376 South Lyme | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06378 Lords Point | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06378 Shawondassee | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06378 Stonington | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06379 Pawcatuck | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06380 Taftville | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06382 Uncasville | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06383 Versailles | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06385 Millstone | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06385 Jordan Village | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06385 Waterford | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06387 Wauregan | 860/959 | Windham County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06387 West Wauregan | 860/959 | Windham County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06388 Mystic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06388 West Mystic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06389 Yantic | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06420 Salem | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06420 Colchester | 860/959 | New London County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06475 Old Saybrook | 860/959 | Middlesex County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |
| 06475 Fenwick | 860/959 | Middlesex County | Connecticut - CT | New London-Norwich, CT-RI (5520) | MSA |