Donaldson is a census-designated place (CDP) in Frailey Township, Schuylkill County, Pennsylvania, United States.

[3] According to the United States Census Bureau, the CDP has a total area of 0.1 square miles (0.26 km2), all land.

At the 2000 census there were 325 people, 128 households, and 86 families living in the CDP.

There were 148 housing units at an average density of 1,356.4 per square mile (523.7/km2).

The racial makeup of the CDP was 99.38% White, 0.31% Asian, and 0.31% from two or more races.