Burnham is a borough in Mifflin County, Pennsylvania, United States.

[4] According to the United States Census Bureau, the borough has a total area of 1.1 square miles (2.8 km2), all land At the 2010 census there were 2,054 people, 866 households, and 577 families residing in the borough.

There were 934 housing units at an average density of 876.7 per square mile (338.5/km2).

The racial makeup of the borough was 98.0% White, 0.4% Black or African American, 0.2% Asian, 0.6% other, and 0.8% from two or more races.

The borough is situated in the Mifflin County School District.