Codes.zone

Grand Coulee Washington Area Code

One area code covers Grand Coulee: 509.

The code covering Grand Coulee

Area codes covering Grand Coulee, Washington, with what each one primarily serves.
Area codePrimarily servesIn service
509Spokane1956

Scope the codes matched to Grand Coulee. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot) and LocalCallingGuide NPA list (2026-07 NPA list). Updated . Overlay relationships come from the numbering-plan authority; the place match is computed.

Which part of town has which code

Grand Coulee has a single code, so there is nothing to divide — every local line carries 509.

ZIP codes for the same city

Postal geography is organised separately from telephone geography, so Grand Coulee’s 1 ZIP code do not map onto the codes above. They are listed in full, with the county each falls in, on the postal side of the site.

Grand Coulee Washington ZIP codes →

Nearby places with different codes

These are the closest places to Grand Coulee whose area codes are not the same set. If you are near one of them, a local number may carry a code that is not on the list above.

The nearest places to Grand Coulee covered by a different set of area codes.
CityDistanceTheir area codes
Leavenworth Washington area codes81 mi206, 360, 509, 564
Skykomish Washington area codes110 mi206, 360, 564
Index Washington area codes119 mi206, 360, 564
Darrington Washington area codes122 mi206, 360, 564
Gold Bar Washington area codes125 mi206, 360, 564
Sultan Washington area codes130 mi206, 360, 564
North Bend Washington area codes132 mi425
Concrete Washington area codes133 mi206, 360, 564

Straight-line distance between place reference points, not driving distance.