Home > WA > Lewis County > Onalaska > Zip 98570

Zip Code 98570 — Onalaska, WA

98570 is a ZIP Code associated with Onalaska, WA, located within Lewis. The postal region supports an estimated population of 5,319 residents across Data Pending housing units, with a population density of 16.3 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (46.635560, -122.635340)

Data MetricLocal Statistic
Postal / Zip Code98570
Primary CityOnalaska
State / ProvinceWA
CountyLewis
Total Population5,319
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density16.3 people/sq mi
TimezoneAmerica/Los_Angeles

How 98570 Compares

MetricZIP 98570Lewis CountyWA State Average
Population5,31986,8877,816,021
Median IncomeData PendingN/AN/A
Population Density16.3 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 98582Salkum8.2 mi438N/A
Zip 98585Silver Creek8.5 mi465N/A
Zip 98542Ethel8.6 mi625N/A
Zip 98533Cinebar10.0 mi890N/A
Zip 98565Napavine13.5 mi568N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →