Get to know Sudden Valley
The practical stuff — trash day, town hall, schools — plus the town’s story and where to go. Kept current by neighbors.
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The basics
About Sudden Valley
Census-designated place in Washington, United StatesSudden Valley is a census-designated place (CDP) just outside Bellingham in Whatcom County, Washington. The population was 6,354 at the 2020 census, down from 6,441 at the 2010 census. Sudden Valley is the second-largest homeowner association in western Washington.
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Town essentials
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