THE WHATCOM COUNTY LAND BRIEF
Land in the
North Cascades Highland Forests setting.
Whatcom County has 2,107.9 square miles of land in Washington. 6 mapped landscape regions meet across Whatcom County: North Cascades Highland Forests, North Cascades Lowland Forests, Fraser Lowland, among others.
Rugged high mountains and glacial terrain span a strong west-to-east climate transition. Wetter maritime forests to the west contrast with drier inland conditions on the eastern side.
Regional context: North Cascades ↗ · Regional mapping across the county footprint
Where the landscape changes
Whatcom County intersects 6 mapped regional units. The largest mapped shares are:
- North Cascades Highland Forests36%
- North Cascades Lowland Forests28.7%
- Fraser Lowland16.4%
- North Cascades Subalpine/Alpine15.1%
- Eastern Puget Uplands3.4%
Puget Lowland in Whatcom County
A glacial lowland surrounds Puget Sound with islands, bays, peninsulas and rolling terrain. Moraines, outwash plains and river terraces create a varied setting beneath the region's maritime climate.
Read the regional source ↗Finding your parcel within Whatcom County
The atlas lists 19 cities, towns, townships, and Census communities associated with Whatcom County, including Bellingham, Birch Bay, Ferndale. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Whatcom County by land and water
The Census records 396.9 square miles of water within Whatcom County, or 15.8% of its total area. That share is close to Whatcom County’s 15.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Whatcom County has 1,259.2 times the land area of nearby Glacier CDP (1.67 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Okanogan County, San Juan County, Skagit County within Washington. A tract near one of these lines should be matched to the county identifier on its own records.

