Cowansville is an unincorporated community in Armstrong County, Pennsylvania, United States.

[1] The community is located on Pennsylvania Route 268, at 6 miles (9.7 km) northwest of Kittanning.

Cowansville has a post office, with ZIP code 16218, which opened on August 8, 1849.

[2][3] Middlesex, Cowansville P.O., appears in the 1876 Atlas of Armstrong County, Pennsylvania.

[4]