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Washington ZIP codes

All 716 ZIPs in Washington, 98001 to 99403. Tap one on the map or in the list.

716

ZIP codes

7,816,021

people live in them

39

counties

111

PO Box & no-area ZIPs

Most people

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All 716 Washington ZIP codes

ZIP codes by county

Pick a county for its ZIP list and map. Counts include ZIPs that only partly reach into the county.

Questions people actually ask

How many ZIP codes are in Washington?

716 ZIP codes are in use in Washington. 605 cover a delivery area, and 111 are PO Box, single-building or organization ZIPs with no area of their own.

What do Washington ZIP codes start with?

Washington ZIP codes start with these three-digit prefixes: 980–986, 988–994. Each prefix is a mail sorting area run from one processing center.

Which Washington ZIP code has the most people?

99301 in Pasco has the most residents of any Washington ZIP, about 87,044 people in the Census Bureau’s ACS 2020–2024 estimates.

Which Washington county has the most ZIP codes?

King County touches 123 ZIP codes, the most of the 39 counties in Washington. 85 Washington ZIPs reach into more than one county.

Are these the official USPS ZIP code boundaries?

The map uses Census ZIP Code Tabulation Areas, the standard public stand-in for USPS delivery areas. They match for almost every home. For a mailing address, the USPS ZIP Code lookup has the final word.

Keep exploring

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Updated 2026-11-10 · Where the data comes from