THE SEASIDE LAND BRIEF
Land in the
Coastal Lowlands setting.
Seaside city has 4.05 square miles of land in Clatsop County. Its Census reference point is in Coastal Lowlands, within Coast Range.
Pacific-facing coastal mountains support moisture-loving conifers, with marine terraces, dunes and beaches along the ocean edge. Inland slopes and the immediate coast have different vegetation patterns.
Regional context: Coast Range ↗ · Classification at the Census reference point
Seaside and Clatsop County
Seaside is associated with Clatsop 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.
Seaside by land and water
The Census records 0.17 square miles of water within Seaside, or 4% of its total area. It is 19.6 percentage points lower than the 23.6% recorded for Clatsop County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Seaside city has 2.2 times the land area of nearby Gearhart city (1.87 square miles). These areas describe boundaries, not comparable property prices.

