Baldwin is a town in Duval County, Florida, United States. When the majority of communities in Duval County consolidated with Jacksonville, Florida in 1968, Baldwin, along with Jacksonville Beach, Atlantic Beach, and Neptune Beach, Florida, remained quasi-independent. Like the other towns, it maintains its own municipal government but its residents vote in the Jacksonville mayoral election and vote for the Jacksonville city council; unlike the others Baldwin no longer supports its own police force. The population was 1,634 at the 2000 census.
Baldwin is located at 30°18′14″N 81°58′30″W / 30.30389°N 81.975°W / 30.30389; -81.975 (30.303788, -81.975029).
According to the United States Census Bureau, the town has a total area of 2.1 square miles (5.5 km²), all land.