Mount Union is a borough in Huntingdon County, Pennsylvania, United States, approximately 44 miles (71 km) southeast of Altoona and 12 miles (19 km) southeast of Huntingdon, on the Juniata River.

In the vicinity are found bituminous coal, ganister rock, fire clay, and some timber.

A major Easter grass factory is located in the northern quadrant of the borough limits; until May 2007, the facility was owned by Bleyer Industries.

The culturally significant Thousand Steps of the Standing Stone Trail are located in the Jacks Narrows, approximately two miles west of the town along U.S. Route 22.

The annual Creation Festival was hosted locally (in Shirleysburg) from 1984 to 2022, drawing thousands of visitors in late June.

[7] Today, Mount Union has 3 subsidized housing developments, Hartman Village, Chestnut Terrace, and Taylor Apartments, the later of which is a 7-story building for senior-citizens.

The industries in Mount Unions include Bleyers Industries which produces plastic products,[8] Containment Solutions which makes large tanks for gas stations,[9] and Bonney Forge which manufactures steel valves and fittings.

Mount Union Area Medical Center which provides preventive health services to the community.