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City ZIP codes · Washington

Sammamish, WA ZIP Codes

2 ZIP codes use the postal name Sammamish, Washington (Census 2020 ZCTAs and GeoNames postal codes, October 2026), all residential. Median household income runs from $244,362 in 98074 to $250,000 or more in 98075 (Census Bureau, ACS 2020-2024). Sammamish's most populous ZIP code is 98074, with 30,761 people (ACS 2020-2024); 86% of its land is in the city of Sammamish.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Sammamish's ZIP codes?

98074: $244k median household income98075: $250k+ median household income980749807598074: $244k median household income98075: $250k+ median household income980749807598074: $244k median household income98075: $250k+ median household income9807498075
The 2 residential ZIP codes named Sammamish, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$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 Sammamish's ZIP codes?

The highest median household income is in 98075 ($250,000 or more), the lowest in 98074 ($244,362). Home values run from $1,366,900 in 98074 to $1,599,100 in 98075.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 2 residential ZIP codes of Sammamish

Residential ZIP codes with the postal name Sammamish, WA, largest first (ACS 2020-2024); sort by any column
County
98074 King County 30,761 2,933 $244k $1.37M
98075 King County 25,498 2,645 $250k+ $1.6M

Download the 2 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

Which counties do Sammamish's ZIP codes reach?

Sammamish's residential ZIP codes lie in King County.

Which first three digits do Sammamish'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 Sammamish starts with 980.

Three-digit prefixes of Sammamish'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 Sammamish's
PrefixSectional centerHereAll codes
980 Seattle, WA (SCF 980) 2 71

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