Washington · FIPS 53015 · County seat: Kelso
Cowlitz County, WA GIS & Parcel Viewer
Use this page to reach the official county parcel map for Cowlitz County, Washington. The button below opens the Cowlitz County ArcGIS parcel map in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Cowlitz County parcel map ↗
Opens gis.cowlitzwa.gov in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Cowlitz County ArcGIS parcel map |
|---|---|
| Type | County-run map |
| Website | gis.cowlitzwa.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Kelso |
| Population | 112,864 (2023 Census Bureau estimate) |
| Land area | 1,141 sq mi |
| FIPS code | 53015 |
Who runs this map
Cowlitz County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. When we tested the link in October 2026 it opened with no login and no fee.
Searching for a parcel, step by step
- Open the link. This viewer is an ArcGIS Experience Builder app, so its layout is custom to the publisher.
- Look for a search box or search widget and type in a street address or parcel ID.
- Click a parcel to see its details in a pop-up or side panel.
- Check the toolbar for a layer list or basemap switcher if you want aerials or other layers.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
About Cowlitz County
The U.S. Census Bureau estimated Cowlitz County's population at 112,864 in 2023, spread over about 1,141 square miles of land, or roughly 99 people per square mile. Among Washington's 39 counties, it is the 12th largest by population. Kelso serves as the county seat.
Counties next to Cowlitz County
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Cowlitz County:
Maps vs. surveys
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.