Find the last 4 digits (ZIP+4) for an address in 99403

ZIP 99403, Clarkston, WA is filled in. Just type the street address.

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ZIP Code 99403 – Clarkston, WA

Clarkston, Washington · Asotin County · Pacific time

ZIP code99403
CityClarkston
StateWashington
CountyAsotin CountyGarfield County
Population20,760
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area143.49 sq mi
Center (lat, long)46.3755, -117.2903

Area codes in this area

509

These are the area codes that most often serve ZIP 99403 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

99402 Asotin · 11 mi99179 Uniontown · 11.4 mi99347 Pomeroy · 13.9 mi99113 Colton · 15.1 mi83501 Lewiston · 19.4 mi99401 Anatone · 20 mi83832 Genesee · 21.8 mi83540 Lapwai · 24.3 mi

About ZIP 99403

ZIP code 99403 is assigned to Clarkston, Washington. It crosses 2 counties; most of its land is in Asotin County. Its Census area covers about 143.49 square miles of land. The closest neighboring ZIP is 99402 (Asotin), about 11 miles away.

Every address in 99403 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources