It is 3 miles (5 km) east of downtown Butler, the county seat.

According to the United States Census Bureau, the borough of East Butler has a total area of 1.0 square mile (2.7 km2), all land.

There were 302 housing units at an average density of 289.3 per square mile (111.7/km2).

The racial makeup of the borough was 99.71% White, 0.15% Asian, and 0.15% Pacific Islander.

33.2% of all households were made up of individuals, and 14.2% had someone living alone who was 65 years of age or older.