Find the last 4 digits (ZIP+4) for an address in 95503

ZIP 95503, Eureka, CA is filled in. Just type the street address.

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ZIP Code 95503 – Eureka, CA

Eureka, California · Humboldt County · Pacific time

ZIP code95503
CityEureka
StateCalifornia
CountyHumboldt County
Population25,054
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area83.72 sq mi
Center (lat, long)40.7384, -124.1078

Area codes in this area

707369

These are the area codes that most often serve ZIP 95503 (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

95501 Eureka · 4.8 mi95502 Eureka · 5.3 mi95534 Cutten · 5.3 mi95537 Fields Landing · 5.9 mi95564 Samoa · 6.2 mi95524 Bayside · 6.4 mi95551 Loleta · 7.8 mi95521 Arcata · 7.9 mi

About ZIP 95503

ZIP code 95503 is assigned to Eureka, California. It lies in Humboldt County. Its Census area covers about 83.72 square miles of land. The closest neighboring ZIP is 95501 (Eureka), about 4.8 miles away.

Every address in 95503 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