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County ZIP codes · Washington · FIPS 53071

Walla Walla County, WA ZIP Codes

Walla Walla County, Washington has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones extend into a neighboring county. Median household income ranges from $62,839 in 99324 (College Place) to $93,092 in 99323 (Burbank) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Walla Walla County?

99323 · Burbank: $93k99324 · College Place: $63k99329 · Dixie: –99348 · Prescott: $79k99360 · Touchet: $93k99361 · Waitsburg: $91k99362 · Walla Walla: $73k99363 · Wallula: –99348993629936199360993239936399323 · Burbank: $93k99324 · College Place: $63k99329 · Dixie: –99348 · Prescott: $79k99360 · Touchet: $93k99361 · Waitsburg: $91k99362 · Walla Walla: $73k99363 · Wallula: –99348993629936199360993239936399323 · Burbank: $93k99324 · College Place: $63k99329 · Dixie: –99348 · Prescott: $79k99360 · Touchet: $93k99361 · Waitsburg: $91k99362 · Walla Walla: $73k99363 · Wallula: –993489936299361993609932399363
The residential ZIP codes of Walla Walla County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $72,474 and $91,367.

They carry 8 postal town names: Walla Walla, College Place, Burbank, Waitsburg, Prescott, Touchet, Wallula, Dixie.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 8 residential ZIP codes in Walla Walla County

Residential ZIP codes mainly in Walla Walla County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
99362 Walla Walla 42,853 141 $73k $430k 92%
99324 College Place 10,137 3,658 $63k $369k 100%
99323 Burbank 4,082 31 $93k $413k 100%
99361 Waitsburg 1,992 9 $91k $296k 68%
99348 Prescott 1,633 3 $79k $237k 96%
99360 Touchet 1,350 8 $93k $455k 100%
99363 Wallula 145 5 – $253k 100%
99329 Dixie 127 279 – $311k 100%

Download the 8 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

3 ZIP codes of Walla Walla County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Walla Walla County and in the neighboring counties
ZIPIn Walla WallaElsewhere
9936292%Umatilla County 8%
9936168%Columbia County 32%
9934896%Columbia County 4%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Walla Walla County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Walla Walla County starts with 993.

Three-digit prefixes of Walla Walla County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Walla Walla County's
PrefixSectional centerHereAll codes
993 Spokane, WA (SCF 990) 8 36

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.