Middlebush is an unincorporated community and census-designated place (CDP)[8] located in Franklin Township, in Somerset County, in the U.S. state of New Jersey.

[13] It is perhaps most distinguished as being the host section for Franklin Township's municipal complex.

Middlebush still has a rural feel with 19th-century homes and tree-lined streets.

[1][2] The 2010 United States census counted 2,326 people, 834 households, and 592 families in the CDP.

Of all households, 25.5% were made up of individuals and 17.5% had someone living alone who was 65 years of age or older.