THE PASCO LAND BRIEF
Land in the
Pleistocene Lake Basins setting.
Pasco city has 39 square miles of land in Franklin 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
Pasco and Franklin County
Pasco is associated with Franklin 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.
Pasco by land and water
The Census records 3.54 square miles of water within Pasco, or 8.3% of its total area. It is 6.5 percentage points higher than the 1.8% recorded for Franklin County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Pasco city has 26.7 times the land area of nearby West Pasco CDP (1.46 square miles). These areas describe boundaries, not comparable property prices.

