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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Pacific County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Pacific County.

County State ZIP Code City Area Codes
Pacific County WA 98638 Naselle 360, 503, 564, 971
Pacific County WA 98640 Ocean Park 360, 564
Pacific County WA 98641 Oysterville 360, 564
Pacific County WA 98644 Seaview 360, 564
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.