On this page, you can find a list of all zip codes in area code 203. What is a ZIP Code? A ZIP code is a term used to describe the postal code system in the United States. ZIP is the abbreviation of Zonal Improvement plan.
The ZIP code was created in 1963 as a measure to increase mail sorting efficiency. The standard ZIP code notation used by the United States Postal service uses five digits to identify a delivery area. The first three digits refer to a sectional center facility (or SCF), which is a network of super post offices. The last two numbers designate the specific post office within an SCF’s territory. Through a ZIP code, one can identify the location now. If you’re looking for contact information in the USA, it’s helpful to know the zip codes.
ZIP Code by Area Code 203
| ZIP Code | City | State |
|---|---|---|
| 06401 | ANSONIA | CT |
| 06403 | BEACON FALLS | CT |
| 06404 | BOTSFORD | CT |
| 06405 | BRANFORD | CT |
| 06408 | CHESHIRE | CT |
| 06410 | CHESHIRE | CT |
| 06411 | CHESHIRE | CT |
| 06418 | DERBY | CT |
| 06437 | GUILFORD | CT |
| 06440 | HAWLEYVILLE | CT |
| 06443 | MADISON | CT |
| 06450 | MERIDEN | CT |
| 06451 | MERIDEN | CT |
| 06460 | MILFORD | CT |
| 06461 | MILFORD | CT |
| 06468 | MONROE | CT |
| 06470 | NEWTOWN | CT |
| 06471 | NORTH BRANFORD | CT |
| 06472 | NORTHFORD | CT |
| 06473 | NORTH HAVEN | CT |
| 06477 | ORANGE | CT |
| 06478 | OXFORD | CT |
| 06482 | SANDY HOOK | CT |
| 06483 | SEYMOUR | CT |
| 06484 | SHELTON | CT |
| 06487 | SOUTH BRITAIN | CT |
| 06488 | SOUTHBURY | CT |
| 06491 | STEVENSON | CT |
| 06492 | WALLINGFORD | CT |
| 06493 | WALLINGFORD | CT |
| 06494 | WALLINGFORD | CT |
| 06495 | WALLINGFORD | CT |
| 06501 | NEW HAVEN | CT |
| 06502 | NEW HAVEN | CT |
| 06503 | NEW HAVEN | CT |
| 06504 | NEW HAVEN | CT |
| 06505 | NEW HAVEN | CT |
| 06506 | NEW HAVEN | CT |
| 06507 | NEW HAVEN | CT |
| 06508 | NEW HAVEN | CT |
| 06509 | NEW HAVEN | CT |
| 06510 | NEW HAVEN | CT |
| 06511 | NEW HAVEN | CT |
| 06512 | EAST HAVEN | CT |
| 06513 | NEW HAVEN | CT |
| 06514 | HAMDEN | CT |
| 06515 | NEW HAVEN | CT |
| 06516 | WEST HAVEN | CT |
| 06517 | HAMDEN | CT |
| 06518 | HAMDEN | CT |
| 06519 | NEW HAVEN | CT |
| 06520 | NEW HAVEN | CT |
| 06521 | NEW HAVEN | CT |
| 06524 | BETHANY | CT |
| 06525 | WOODBRIDGE | CT |
| 06530 | NEW HAVEN | CT |
| 06531 | NEW HAVEN | CT |
| 06532 | NEW HAVEN | CT |
| 06533 | NEW HAVEN | CT |
| 06534 | NEW HAVEN | CT |
| 06535 | NEW HAVEN | CT |
| 06536 | NEW HAVEN | CT |
| 06537 | NEW HAVEN | CT |
| 06538 | NEW HAVEN | CT |
| 06540 | NEW HAVEN | CT |
| 06601 | BRIDGEPORT | CT |
| 06602 | BRIDGEPORT | CT |
| 06604 | BRIDGEPORT | CT |
| 06605 | BRIDGEPORT | CT |
| 06606 | BRIDGEPORT | CT |
| 06607 | BRIDGEPORT | CT |
| 06608 | BRIDGEPORT | CT |
| 06610 | BRIDGEPORT | CT |
| 06611 | TRUMBULL | CT |
| 06612 | EASTON | CT |
| 06614 | STRATFORD | CT |
| 06615 | STRATFORD | CT |
| 06673 | BRIDGEPORT | CT |
| 06699 | BRIDGEPORT | CT |
| 06701 | WATERBURY | CT |
| 06702 | WATERBURY | CT |
| 06703 | WATERBURY | CT |
| 06704 | WATERBURY | CT |
| 06705 | WATERBURY | CT |
| 06706 | WATERBURY | CT |
| 06708 | WATERBURY | CT |
| 06710 | WATERBURY | CT |
| 06712 | PROSPECT | CT |
| 06716 | WOLCOTT | CT |
| 06720 | WATERBURY | CT |
| 06721 | WATERBURY | CT |
| 06722 | WATERBURY | CT |
| 06723 | WATERBURY | CT |
| 06724 | WATERBURY | CT |
| 06725 | WATERBURY | CT |
| 06726 | WATERBURY | CT |
| 06749 | WATERBURY | CT |
| 06762 | MIDDLEBURY | CT |
| 06770 | NAUGATUCK | CT |
| 06784 | SHERMAN | CT |
| 06798 | WOODBURY | CT |
| 06801 | BETHEL | CT |
| 06804 | BROOKFIELD | CT |
| 06807 | COS COB | CT |
| 06810 | DANBURY | CT |
| 06811 | DANBURY | CT |
| 06812 | NEW FAIRFIELD | CT |
| 06813 | DANBURY | CT |
| 06820 | DARIEN | CT |
| 06824 | FAIRFIELD | CT |
| 06825 | FAIRFIELD | CT |
| 06828 | FAIRFIELD | CT |
| 06829 | GEORGETOWN | CT |
| 06830 | GREENWICH | CT |
| 06831 | GREENWICH | CT |
| 06836 | GREENWICH | CT |
| 06838 | GREENS FARMS | CT |
| 06840 | NEW CANAAN | CT |
| 06850 | NORWALK | CT |
| 06851 | NORWALK | CT |
| 06852 | NORWALK | CT |
| 06853 | NORWALK | CT |
| 06854 | NORWALK | CT |
| 06855 | NORWALK | CT |
| 06856 | NORWALK | CT |
| 06857 | NORWALK | CT |
| 06858 | NORWALK | CT |
| 06860 | NORWALK | CT |
| 06870 | OLD GREENWICH | CT |
| 06875 | REDDING CENTER | CT |
| 06876 | REDDING RIDGE | CT |
| 06877 | RIDGEFIELD | CT |
| 06878 | RIVERSIDE | CT |
| 06879 | RIDGEFIELD | CT |
| 06880 | WESTPORT | CT |
| 06881 | WESTPORT | CT |
| 06883 | WESTON | CT |
| 06888 | WESTPORT | CT |
| 06889 | WESTPORT | CT |
| 06890 | SOUTHPORT | CT |
| 06896 | REDDING | CT |
| 06897 | WILTON | CT |
| 06901 | STAMFORD | CT |
| 06902 | STAMFORD | CT |
| 06903 | STAMFORD | CT |
| 06904 | STAMFORD | CT |
| 06905 | STAMFORD | CT |
| 06906 | STAMFORD | CT |
| 06907 | STAMFORD | CT |
| 06910 | STAMFORD | CT |
| 06911 | STAMFORD | CT |
| 06912 | STAMFORD | CT |
| 06913 | STAMFORD | CT |
| 06914 | STAMFORD | CT |
| 06926 | STAMFORD | CT |
| 06927 | STAMFORD | CT |