Horsham is a census-designated place in Horsham Township, Montgomery County, Pennsylvania, United States.

It is home to the Biddle Air National Guard Base at the former site of Naval Air Station Joint Reserve Base Willow Grove, as well as the headquarters of Music Choice, a cable music provider.

The climate in Horsham is characterized by hot, humid summers and generally cool to cold winters.

[6] As of the 2020 census, Horsham's population was 81.7% Non-Hispanic White, 3.1% Black or African American, 0% Native American and Alaskan Native, 7.7% Asian, 0% Native Hawaiian and Other Pacific Islander, 2.6% were two or more races.

The population density was 2,777.5 inhabitants per square mile (1,072.4/km2).