County GIS · Parcel viewers · October 19, 2026

Washington GIS Maps by County: The Parcel Viewer Each Uses

Which parcel map software each Washington county uses (39 of 39 verified), how to search the common viewers, and a link to every official map.

Looking for Washington county GIS maps? Washington has 39 counties, and their official parcel maps do not all run on the same software. Knowing which viewer a county uses tells you what the search box expects and where the parcel details are.

If you look up land in more than one Washington county, you will notice the parcel maps don't match. That is because each office chooses its own software. Below, all 39 Washington entries in our directory are listed with the viewer each one uses, plus tips for the most common types.

Washington at a glance

• Entries in the directory: 39
• With a verified public parcel viewer: 39
• Washington Current Parcels layer in ArcGIS Map Viewer: 16
• county web map: 12
• ArcGIS Experience Builder: 6
• ArcGIS Web AppBuilder: 4
• ArcGIS Instant Apps: 1

16 of these entries point to a statewide viewer rather than a county-run site (Washington Current Parcels layer in ArcGIS Map Viewer). A statewide map is handy for crossing county lines, but the local office is still where deeds and tax records are kept.

The most populous counties

Most lookups happen in the largest places, so here is what their maps run on.

How to search the most common viewers in Washington

Washington Current Parcels layer in ArcGIS Map Viewer (16 entries, e.g. Adams County, Clallam County, Franklin County)

1. From the county's Platbookmapper page, open the Washington Current Parcels layer in ArcGIS Map Viewer link. It opens in a new tab.
2. Search for an address or parcel number if the viewer has a search box, or pan and zoom to the property.
3. Click a parcel to read the attributes the statewide layer carries. Field names vary from county to county.
4. Statewide layers are compiled copies, so confirm ownership, tax and deed details with the county's own assessor or recorder.

county web map (12 entries, e.g. Benton County, Chelan County, Clark County)

1. Open the county's own web map.
2. Search for the property or pan and zoom to it.
3. Click the lot to bring up what the county publishes about it.
4. Look for print or measure tools if you need a quick map or rough size.

ArcGIS Experience Builder (6 entries, e.g. Cowlitz County, Douglas County, Island County)

1. Open the official map link from the county's page; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
2. Search by address or parcel ID, or pan to the area.
3. Select a parcel to view the information the publisher makes available.
4. Explore the app's panels for layers, legends or printing.

Every Washington entry and its viewer

Before you rely on what you find

Online parcel lines are drawn for tax mapping, not surveys, so they can sit a few feet off the real boundary. For anything legal, such as a fence, a sale or a dispute, use the recorded deed and a licensed surveyor. To check flood zones, soils or wetlands for a spot you found, open it on the Platbookmapper Land Map, which pulls FEMA, USDA and U.S. Fish & Wildlife layers.

See also: Washington on Platbookmapper.

Related guides

• Washington plat maps
• Washington statewide parcel map
• Washington landowner maps for hunting
• Oregon–Washington border counties

Sources

• Platbookmapper county GIS directory (the live data file behind our county pages, pulled October 19, 2026). Viewer types are read from each official map's web address, and statewide viewers are named as listed in the directory.
• U.S. Census Bureau, Population Estimates Program, county totals, Vintage 2023 (July 1, 2023 estimates)
• County seats: Wikidata (county seat property), cross-checked against Census place names.