Reiffton is a census-designated place (CDP) in Exeter Township, Berks County, Pennsylvania, United States.

[3] According to the United States Census Bureau, the CDP has a total area of 1.6 square miles (4.1 km2), all land.

At the 2000 census there were 2,888 people, 1,079 households, and 854 families living in the CDP.

There were 1,099 housing units at an average density of 677.5 per square mile (261.6/km2).

18.0% of households were made up of individuals, and 9.9% were one person aged 65 or older.