THE SUMPTER LAND BRIEF
Land in the
Cold Basins setting.
Sumpter city has 2.18 square miles of land in Baker County. Its Census reference point is in Cold Basins, within Blue Mountains.
The Blue Mountains combine open mountain ranges and dissected volcanic uplands. The Wallowa and Elkhorn high country includes older granitic and metamorphic rocks above the surrounding lava landscape.
Regional context: Blue Mountains ↗ · Classification at the Census reference point
Sumpter and Baker County
Sumpter is associated with Baker County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Sumpter by land and water
The Census records 0 square miles of water within Sumpter, or 0% of its total area. It is 0.6 percentage points lower than the 0.6% recorded for Baker County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sumpter city has 5.9 times the land area of nearby Granite city (0.37 square miles). These areas describe boundaries, not comparable property prices.

