Zip Area Code

Mattawa, Washington

Mattawa, Washington, in Grant County, has ZIP code 99349 and area code 509.

ZIP code
99349
Area code
509
Time zone
Pacific Time
Coordinates
46.7310, -119.7783

ZIP codes in Mattawa

ZIP codePost officeCountyArea codes
99349MattawaGrant County509

Area code for Mattawa

  • Area code 509

    In service since 1957. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Time zone

Mattawa is in the Pacific Time zone.

Towns near Mattawa