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ZIP Code Database - Facts & Stats

Data Last Updated: February 1, 2023

ZIP Codes for City of Underwood, WA

Underwood, WA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 98651StandardSkamania939

Timezone(s):Pacific (GMT -08:00)
Population:939 (More Details)
Male Population:472
Female Population:467
Median Age:44
ZIP Codes:1
Area Codes:1
Total Area:1,684 square miles (county)
Land Area:1,656 square miles (county)
Water Area:28 square miles (county)

Underwood, WA Demographic Information *

There is no Census data for the city of UNDERWOOD, WA. We have pulled information for the ZIP Code 98651 instead.
Total population939
Male population472
Female population467
Median age (years)44.2
White Population843
Black Population1
Indian Population7
Asian Population12
Hawaiian Population0
Hispanic Population124
Median age (Male)44.1
Median age (Female)44.4
Total households372
Family households (families)283
Average household size2.52
Average family size2.83
Total housing units432
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  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],