Erwinville is an unincorporated community and census-designated place in West Baton Rouge Parish, Louisiana, United States. As of the 2020 census, Erwinville had a population of 2,275. U.S. Route 190 passes through the community.
According to the U.S. Census Bureau, the community has an area of , all land.
Erwinville first appeared as a census designated place in the 2010 U.S. census. '
As of the 2020 United States census, there were 2,275 people, 918 households, and 640 families residing in the CDP.