THE UMATILLA LAND BRIEF
Land in the
Pleistocene Lake Basins setting.
Umatilla city has 5.09 square miles of land in Umatilla County. Its Census reference point is in Pleistocene Lake Basins, within Columbia Plateau.
Basalt underlies this dry plateau of grassland and sagebrush. Windblown soils cover some uplands, while ancient flood paths exposed rock across the region's scabland terrain.
Regional context: Columbia Plateau ↗ · Classification at the Census reference point
Umatilla and Umatilla County
Umatilla is associated with Umatilla 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.
Umatilla by land and water
The Census records 0.1 square miles of water within Umatilla, or 1.9% of its total area. It is 1.4 percentage points higher than the 0.5% recorded for Umatilla County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Umatilla city has 58.9% of the land area of nearby Hermiston city (8.64 square miles). These areas describe boundaries, not comparable property prices.

