Oklahoma · FIPS 40147 · County seat: Bartlesville
Washington County, OK GIS & Parcel Viewer
Washington County, Oklahoma parcel data lives on OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Washington County statewide map ↗
Opens okmaps.org in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
|---|---|
| Type | Statewide map (covers all of Oklahoma) |
| Website | okmaps.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Bartlesville |
| Population | 53,706 (2023 Census Bureau estimate) |
| Land area | 416 sq mi |
| FIPS code | 40147 |
Who runs this map
This is a statewide map, not a county site. OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer covers parcels across Oklahoma, and Washington County is one part of it. Because a state agency compiles this layer from local data, check with the Washington County assessor or recorder before relying on a recent change. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this statewide map
- Open the statewide viewer in a new tab and move the map to Washington County (around Bartlesville).
- Nothing parcel-related shows at first. Add it through Explore > Land Parcels > Statewide Parcels, then click the green +.
- Zoom in closely; at wide views the parcel layer stays blank.
- Click a parcel to see its record, and keep the parcel ID handy for later searches with the county assessor or county clerk.
Have a tax bill handy? The parcel or account number on it is usually the fastest way to search.
About Washington County
Census Bureau figures put Washington County at about 53,706 people (2023 estimate) on roughly 416 square miles of land, which is about 129 residents per square mile. By population it ranks 14th of 77 counties in Oklahoma. The county seat is Bartlesville.
Nearby parcel maps
Washington County shares a border with the counties below. Each link has its own official map:
A note on accuracy
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.