Home > WA > Lewis County > Onalaska > Zip 98570

Zip Code 98570 — Onalaska, WA

ZIP Code 98570 is associated with Onalaska, WA, in Lewis County. The listed population estimate is 5,319; estimated density is 16.3 people per square mile. Among records with population estimates, it ranks #4 of 20 in Lewis County and #289 of 597 in WA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (46.635560, -122.635340)

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

How 98570 Compares

MetricZIP 98570Lewis County recordsWA records
Population estimate5,31986,887 (sum)7,816,021 (sum)
Population Density16.3 /sq mi----
County population rank#4 of 20----
State population rank#289 of 597----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in WA

ZIP CodeCityDistancePopulation estimate
ZIP 98582Salkum8.2 mi438
ZIP 98585Silver Creek8.5 mi465
ZIP 98542Ethel8.6 mi625
ZIP 98533Cinebar10.0 mi890
ZIP 98565Napavine13.5 mi568

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 →