San Carlos Park is a census-designated place (CDP) in Lee County, Florida, United States.

[4] It is an unincorporated community, bordered to the south by the village of Estero and to the east by the Three Oaks CDP.

U.S. Route 41 forms the western edge of San Carlos Park, leading north 13 miles (21 km) to Fort Myers, the county seat, and south through Estero and Bonita Springs 22 miles (35 km) to Naples.

[5] The land in the CDP drains west via Mullock Creek to Estero Bay, an estuary connected to the Gulf of Mexico.

Brothers Jules & Jack Freeman established San Carlos Park in 1953 in hopes of providing low cost homes for the middle class.