Zip Area Code

North Waltham, Massachusetts

North Waltham, Massachusetts, in Middlesex County, has ZIP code 02455 and area code 617, with 857 as an overlay.

ZIP code
02455
Area codes
617, 857
Time zone
Eastern Time
Coordinates
42.3621, -71.2055

ZIP codes in North Waltham

ZIP codePost officeCountyArea codes
02455*North WalthamMiddlesex County617, 857

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

Area codes for North Waltham

  • Area code 617

    In service since 1947. Shares its area with 857. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 857

    In service since May 2, 2001. Shares its area with 617. 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

North Waltham is in the Eastern Time zone.

Towns near North Waltham