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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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Yakima County ZIP Codes

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

County State ZIP Code City Area Codes
Yakima County WA 98944 Sunnyside 509
Yakima County WA 98947 Tieton 509
Yakima County WA 98948 Toppenish 509
Yakima County WA 98951 Wapato 509
Yakima County WA 98952 White Swan 509
Yakima County WA 98953 Zillah 509
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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.