About This Place
Custer is a census-designated place (CDP) in Whatcom County, Washington, United States. The population was 366 at the 2010 census.
Custer is located at 48°55′4″N 122°38′27″W / 48.91778°N 122.64083°W / 48.91778; -122.64083 (48.917705, -122.640880).
According to the United States Census Bureau, the CDP has a total area of 1.8 square miles (4.7 km²), all of it land.