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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Sumas, WA

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Counties:WHATCOM, WA
Area Code(s):360, 564
Timezone(s):Pacific (GMT -08:00)
City Population:1,307 (More Details)
CBSA:Bellingham, WA
Congressional District(s):01, 02
Land Area:2,107 square miles (county)
Water Area:397 square miles (county)

1 ZIP Code

Sumas, WA ZIP Code Boundaries

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Sumas, WA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Sumas, WA Demographic Information *

Total population**1,307
Male population643
Female population664
Median age (years)30.6
White Population1,094
Black Population20
Indian Population32
Asian Population20
Hawaiian Population0
Hispanic Population206
Median age (Male)31.1
Median age (Female)30.1
Total households482
Family households (families)329
Average household size2.71
Average family size3.27
Total housing units531
* Demographic data is based on 2010 Census for the City of SUMAS.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  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],