Lyman is a town in Skagit County, Washington, United States.

[4] It is included in the Mount Vernon-Anacortes, Washington Metropolitan Statistical Area.

Prior to American settlement, the Chobaabish (Lushootseed: čubəʔabš)[5] band of the Skagit people[disambiguation needed] had two winter houses around what is now Lyman.

One winter longhouse was located close to the present town, along Lyman Slough (Lushootseed: yət̕ič).

[5][6] Another winter longhouse was located across the Skagit River, at the mouth of Day Creek (Lushootseed: sk̓ʷəb).

Floodwaters in the channel, eroded a hundred feet of property during November 2017.

18.8% of all households were made up of individuals, and 8.1% had someone living alone who was 65 years of age or older.