Oregon · FIPS 41031 · County seat: Madras
Jefferson County, OR GIS & Parcel Viewer
Here is the direct link to the statewide parcel map covering Jefferson County, OR: ORMAP statewide tax lot viewer (Oregon). Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Jefferson County statewide map ↗
Opens ormap.net in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | ORMAP statewide tax lot viewer (Oregon) |
|---|---|
| Type | Statewide map (covers all of Oregon) |
| Website | ormap.net |
| Access | Free, no login (checked Oct 2026) |
| County seat | Madras |
| Population | 25,454 (2023 Census Bureau estimate) |
| Land area | 1,782 sq mi |
| FIPS code | 41031 |
Where the parcel data comes from
The link goes to a statewide map (ORMAP statewide tax lot viewer (Oregon)). It shows parcels for Jefferson County along with the rest of Oregon. Statewide parcel layers are usually stitched together from county files, so the newest splits or sales may show up on the county's own records first. When we tested the link in October 2026 it opened with no login and no fee.
Searching for a parcel, step by step
- Open ORMAP statewide tax lot viewer (Oregon) in a new tab and zoom to Jefferson County (around Madras).
- Type a street address into the search box, or click directly on a parcel.
- Review the parcel attributes; field names vary by state.
- Confirm anything important with the county assessor, since the statewide layer is a compiled copy.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
Jefferson County by the numbers
The U.S. Census Bureau estimated Jefferson County's population at 25,454 in 2023, spread over about 1,782 square miles of land, or roughly 14 people per square mile. Among Oregon's 36 counties, it is the 25th largest by population. Its county seat is Madras.
Nearby parcel maps
Jefferson County shares a border with the counties below. Each link has its own official map:
Maps vs. surveys
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.