Snohomish is a city in Snohomish County, Washington, United States. The population was 9,098 at the 2010 census. Take a look below for 25 awesome and interesting facts about Snohomish, Washington, United States. 1. It is located on the Snohomish River, southeast of Everett and northwest of Monroe. Snohomish lies at the intersection of U.S….