Westfield is a town in Aroostook County, Maine, United States.

[1] At the 2010 census there were 549 people, 216 households, and 159 families living in the town.

There were 240 housing units at an average density of 6.0 per square mile (2.3/km2).

At the 2000 census there were 559 people, 218 households, and 156 families living in the town.

There were 237 housing units at an average density of 5.9 per square mile (2.3/km2).