Marietta-Alderwood is a census-designated place (CDP) in Whatcom County, Washington, United States. As of the 2020 census, Marietta-Alderwood had a population of 4,015. Parts of Marietta-Alderwood were annexed into Bellingham in 2019, while the rest remains an unincorporated area.
Geography
According to the United States Census Bureau, the CDP has a total area of , of which, of it is land and of it (19.54%) is water.
Climate
This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F. According to the Köppen Climate Classification system, Marietta-Alderwood has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.
Demographics
As of the census
Within the CDP, the Bellingham SD portion is zoned to Alderwood Elementary School, Shuksan Middle School, and Squalicum High School.