Lyman is a town in Skagit County, Washington, United States. Take a look below for 10 interesting and awesome facts about Lyman, Washington, United States. 1. The population was 438 at the 2010 census. 2. It is included in the Mount Vernon-Anacortes, Washington Metropolitan Statistical Area. 3. Lyman’s first postmaster, B.L. Lyman, named the town…