Marion Heights is a borough in Northumberland County, Pennsylvania, United States.

[4] According to the United States Census Bureau, the borough has a total area of 0.2 square miles (0.52 km2), all land.

Marion Heights in governed by an elected borough council and mayor.

The racial makeup of the borough was 99.32% White, 0.14% Native American, and 0.54% from two or more races.

29.9% of all households were made up of individuals, and 15.6% had someone living alone who was 65 years of age or older.