Zip Area Code

Chelsea, Michigan

Chelsea, Michigan, in Washtenaw County, has ZIP code 48118 and area code 734, with 679 as an overlay.

ZIP code
48118
Area codes
734, 679
Time zone
Eastern Time
Coordinates
42.3207, -84.0334

ZIP codes in Chelsea

ZIP codePost officeCountyArea codes
48118ChelseaWashtenaw County734, 679

Area codes for Chelsea

  • Area code 734

    In service since December 13, 1997. Shares its area with 679. Local calls are dialed with seven digits; dialing ten digits also works.

  • Area code 679

    In service since November 7, 2025. Shares its area with 313. 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

Chelsea is in the Eastern Time zone.

Towns near Chelsea