It has no direct road connection to the rest of King County, with access on U.S. Route 2 through Snohomish County. The relative isolation of Skykomish from the rest of the county and its services has led to calls for secession or joining Snohomish County.
The [Samish] island is located on the estuary of the Samish River which enters Samish Bay and Alice Bay on the southeast side of the island.
Samish Island is generally considered part of the Nanaimo Formation. This formation is much younger than the other terranes in the San Juan Islands and consequently, is much less deformed.