East Rochester is a borough in central Beaver County, Pennsylvania, along the Ohio River.

As of the 2000 census,[7] there were 623 people, 283 households, and 179 families residing in the borough.

There were 293 housing units at an average density of 737.6 per square mile (284.8/km2).

The racial makeup of the borough was 95.83% White, 3.53% African American, and 0.64% from two or more races.

33.9% of all households were made up of individuals, and 18.7% had someone living alone who was 65 years of age or older.