West Sunbury is a borough in Butler County, Pennsylvania, United States.

Via PA 308, it is 10 miles (16 km) south to Butler, the county seat.

According to the United States Census Bureau, West Sunbury has a total area of 0.11 square miles (0.29 km2), all land.

Students in the borough and surrounding region belong to the Moniteau School District.

[8] Children in kindergarten through sixth grade receive education at the only elementary school, Dassa McKinney, located east of borough.