Zip Area Code

Norwalk, Connecticut

Norwalk, Connecticut, in Fairfield County, has ZIP codes 06850, 06851, 06852, 06853, 06854, 06855 and others, and area code 203, with 475 as an overlay.

ZIP codes
06850, 06851, 06852, 06853 …
Area codes
203, 475
Time zone
Eastern Time
Coordinates
41.1670, -73.4039

ZIP codes in Norwalk

ZIP codePost officeCountyArea codes
06850NorwalkFairfield County203, 475
06851NorwalkFairfield County203, 475
06852*NorwalkWestern Connecticut203, 475
06853NorwalkFairfield County203, 475
06854NorwalkFairfield County203, 475
06855NorwalkFairfield County203, 475
06856*NorwalkWestern Connecticut203, 475
06857*NorwalkWestern Connecticut203, 475
06858*NorwalkWestern Connecticut203, 475
06860*NorwalkWestern Connecticut203, 475

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area codes for Norwalk

  • Area code 203

    In service since 1947. Shares its area with 475. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 475

    In service since December 12, 2009. Shares its area with 203. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Norwalk is in the Eastern Time zone.

Towns near Norwalk