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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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Walla Walla County ZIP Codes

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

County State ZIP Code City Area Codes
Walla Walla County WA 99323 Burbank 509
Walla Walla County WA 99324 College Place 509
Walla Walla County WA 99329 Dixie 509
Walla Walla County WA 99348 Prescott 509
Walla Walla County WA 99360 Touchet 509
Walla Walla County WA 99361 Waitsburg 509
Walla Walla County WA 99362 Walla Walla 458, 509, 541
Walla Walla County WA 99363 Wallula 458, 509, 541

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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.