Data Last Updated: June 1, 2023

ZIP Codes for City of Onalaska, WA


    
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Counties:	LEWIS, WA
Area Code(s):	360, 564
Timezone(s):	Pacific (GMT -08:00)
City Population:	621 (More Details)
CBSA:	Centralia, WA
Congressional District(s):	03
Land Area:	2,403 square miles (county)
Water Area:	33 square miles (county)

1 ZIP Code

Onalaska, WA ZIP Code Boundaries

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Onalaska, WA Covers 1 ZIP Code

ZIP Code	Type	Population	% of Population	Aliases
98570	Standard	3,889	100.00%	ALPHA, LACAMAS

Onalaska, WA Demographic Information *

Total population**	621
Male population	300
Female population	321
Median age (years)	39.7
White Population	575
Black Population	3
Indian Population	20
Asian Population	0
Hawaiian Population	0
Hispanic Population	30
Median age (Male)	40.4
Median age (Female)	38.8
Total households	238
Family households (families)	175
Average household size	2.61
Average family size	2.97
Total housing units	251

* Demographic data is based on 2010 Census for the City of ONALASKA.
** City and ZIP Code Population will not be equal due to differences in their geographies.

References

U.S. Postal Service [Last Updated: 2/1/2023], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 2/1/2023], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov/
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010], https://www.census.gov