Zip Area Code

Lake Oswego, Oregon

Lake Oswego, Oregon, in Clackamas County, has ZIP codes 97034 and 97035 and area code 503, with 971 as an overlay.

ZIP codes
97034, 97035
Area codes
503, 971
State
Oregon
Time zone
Pacific Time
Coordinates
45.4120, -122.7037

ZIP codes in Lake Oswego

ZIP codePost officeCountyArea codes
97034Lake OswegoClackamas County503, 971
97035Lake OswegoClackamas County503, 971

Area codes for Lake Oswego

  • Area code 503

    In service since 1947. Shares its area with 971. Local calls are dialed with ten digits.

  • Area code 971

    In service since October 1, 2000. Shares its area with 503. Local calls are dialed with ten digits.

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

Lake Oswego is in the Pacific Time zone.

Towns near Lake Oswego