Windsor is an unincorporated community and census-designated place (CDP) in Randolph and Delaware counties, in the U.S. state of Indiana.
Windsor was laid out on January 30, 1832. The community most likely was named after Windsor Castle. A post office was established at Windsor in 1831, and remained in operation until it was discontinued in 1898.
The United States Census Bureau defined Windsor as a census designated place in the 2022 American Community Survey.