Codes.zone

Riverside Washington Area Code

One area code covers Riverside: 509.

The code covering Riverside

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

Scope the codes matched to Riverside. 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

Riverside 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 Riverside’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.

Riverside Washington ZIP codes →

Nearby places with different codes

These are the closest places to Riverside 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 Riverside covered by a different set of area codes.
CityDistanceTheir area codes
Leavenworth Washington area codes83 mi206, 360, 509, 564
Darrington Washington area codes98 mi206, 360, 564
Skykomish Washington area codes101 mi206, 360, 564
Concrete Washington area codes103 mi206, 360, 564
Index Washington area codes106 mi206, 360, 564
Gold Bar Washington area codes110 mi206, 360, 564
Hamilton Washington area codes114 mi206, 360, 564
Sultan Washington area codes114 mi206, 360, 564

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