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ZIP Code Database - Facts & Stats

Data Last Updated: October 1, 2021

ZIP Codes for City of Sammamish, WA

Sammamish, WA Covers 3 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 98029StandardKing24,348425
ZIP Code 98074StandardKing25,748425 / 206
ZIP Code 98075StandardKing20,715425

Timezone(s):Pacific (GMT -08:00)
Counties:KING, WA
Population:45,780 (More Details)
Male Population:22,921
Female Population:22,859
Median Age:38
ZIP Codes:3
Area Codes:2
Total Area:2,307 square miles (county)
Land Area:2,115 square miles (county)
Water Area:191 square miles (county)

Sammamish, WA Demographic Information *

Total population45,780
Male population22,921
Female population22,859
Median age (years)37.7
White Population34,207
Black Population439
Indian Population126
Asian Population8,852
Hawaiian Population47
Hispanic Population1,804
Median age (Male)37.6
Median age (Female)37.8
Total households15,154
Family households (families)12,918
Average household size3.01
Average family size3.28
Total housing units15,736
* Demographic data is based on 2010 Census.

Sammamish, WA Other Information

  • Located in KING County, Washington
  • Sammamish, WA is also known as:

81 Cities within 30 miles of Sammamish, WA Products


  1. U.S. Postal Service [Last Updated: 10/1/2021],
  2. Internal Data Creation [Last Updated: 10/1/2021],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],