County GIS · Parcel viewers · October 19, 2026
Oregon GIS Maps by County: The Parcel Viewer Each Uses
Which parcel map software each Oregon county uses (36 of 36 verified), how to search the common viewers, and a link to every official map.
Looking for Oregon county GIS maps? Oregon has 36 counties, and the Platbookmapper directory sends every one of them to the same statewide viewer, the ORMAP statewide tax lot viewer. That makes searching across county lines simpler: the search box, the parcel pop-ups and the tools work the same way in every county.
This guide sorts all 36 Oregon entries in the Platbookmapper directory with the software behind each official map.
Oregon at a glance
- Entries in the directory: 36
- With a verified public parcel viewer: 36
- ORMAP statewide tax lot viewer: 36
All 36 entries point to a statewide viewer rather than a county-run site (ORMAP statewide tax lot 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.
| Name | 2023 population | Viewer |
|---|---|---|
| Multnomah County | 789,698 | ORMAP statewide tax lot viewer |
| Washington County | 598,865 | ORMAP statewide tax lot viewer |
| Clackamas County | 423,173 | ORMAP statewide tax lot viewer |
| Lane County | 381,181 | ORMAP statewide tax lot viewer |
| Marion County | 346,741 | ORMAP statewide tax lot viewer |
How to search the most common viewers in Oregon
ORMAP statewide tax lot viewer (36 entries, e.g. Baker County, Benton County, Clackamas County)
- From the county's Platbookmapper page, open the ORMAP statewide tax lot viewer link. It opens in a new tab.
- Search for an address or parcel number if the viewer has a search box, or pan and zoom to the property.
- Click a parcel to read the attributes the statewide layer carries. Field names vary from county to county.
- Statewide layers are compiled copies, so confirm ownership, tax and deed details with the county's own assessor or recorder.
Every Oregon entry and its viewer
| Name | Seat | 2023 population | Official viewer type |
|---|---|---|---|
| Baker County | Baker City | 16,912 | ORMAP statewide tax lot viewer |
| Benton County | Corvallis | 97,713 | ORMAP statewide tax lot viewer |
| Clackamas County | Oregon City | 423,173 | ORMAP statewide tax lot viewer |
| Clatsop County | Astoria | 41,102 | ORMAP statewide tax lot viewer |
| Columbia County | St. Helens | 53,880 | ORMAP statewide tax lot viewer |
| Coos County | Coquille | 64,212 | ORMAP statewide tax lot viewer |
| Crook County | Prineville | 26,952 | ORMAP statewide tax lot viewer |
| Curry County | Gold Beach | 23,296 | ORMAP statewide tax lot viewer |
| Deschutes County | Bend | 208,513 | ORMAP statewide tax lot viewer |
| Douglas County | Roseburg | 112,435 | ORMAP statewide tax lot viewer |
| Gilliam County | Condon | 2,026 | ORMAP statewide tax lot viewer |
| Grant County | Canyon City | 7,215 | ORMAP statewide tax lot viewer |
| Harney County | Burns | 7,440 | ORMAP statewide tax lot viewer |
| Hood River County | Hood River | 23,745 | ORMAP statewide tax lot viewer |
| Jackson County | Medford | 220,768 | ORMAP statewide tax lot viewer |
| Jefferson County | Madras | 25,454 | ORMAP statewide tax lot viewer |
| Josephine County | Grants Pass | 87,821 | ORMAP statewide tax lot viewer |
| Klamath County | Klamath Falls | 70,003 | ORMAP statewide tax lot viewer |
| Lake County | Lakeview | 8,293 | ORMAP statewide tax lot viewer |
| Lane County | Eugene | 381,181 | ORMAP statewide tax lot viewer |
| Lincoln County | Newport | 50,821 | ORMAP statewide tax lot viewer |
| Linn County | Albany | 131,496 | ORMAP statewide tax lot viewer |
| Malheur County | Vale | 32,044 | ORMAP statewide tax lot viewer |
| Marion County | Salem | 346,741 | ORMAP statewide tax lot viewer |
| Morrow County | Heppner | 12,302 | ORMAP statewide tax lot viewer |
| Multnomah County | Portland | 789,698 | ORMAP statewide tax lot viewer |
| Polk County | Dallas | 89,805 | ORMAP statewide tax lot viewer |
| Sherman County | Moro | 1,951 | ORMAP statewide tax lot viewer |
| Tillamook County | Tillamook | 27,417 | ORMAP statewide tax lot viewer |
| Umatilla County | Pendleton | 80,053 | ORMAP statewide tax lot viewer |
| Union County | La Grande | 25,944 | ORMAP statewide tax lot viewer |
| Wallowa County | Enterprise | 7,674 | ORMAP statewide tax lot viewer |
| Wasco County | The Dalles | 26,333 | ORMAP statewide tax lot viewer |
| Washington County | Hillsboro | 598,865 | ORMAP statewide tax lot viewer |
| Wheeler County | Fossil | 1,436 | ORMAP statewide tax lot viewer |
| Yamhill County | McMinnville | 108,644 | ORMAP statewide tax lot 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: Oregon on Platbookmapper.
Related guides
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.