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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

ZIP Codes for City of Rock Island, WA

Rock Island, WA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 98850StandardDouglas1,543509

Timezone(s):Pacific (GMT -08:00)
Counties:DOUGLAS, WA
Population:788 (More Details)
Male Population:420
Female Population:368
Median Age:33
ZIP Codes:1
Area Codes:1
Total Area:1,849 square miles (county)
Land Area:1,819 square miles (county)
Water Area:29 square miles (county)

Rock Island, WA Demographic Information *

Total population788
Male population420
Female population368
Median age (years)32.5
White Population502
Black Population6
Indian Population4
Asian Population1
Hawaiian Population1
Hispanic Population405
Median age (Male)32.1
Median age (Female)33.1
Total households262
Family households (families)179
Average household size3.01
Average family size3.66
Total housing units277
* Demographic data is based on 2010 Census.

Rock Island, WA Other Information

19 Cities within 30 miles of Rock Island, WA Products


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  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],