Kellersburg is an unincorporated community in Madison Township, Armstrong County, Pennsylvania, United States.

[1] Kellersburg was founded in 1842 by Nicholas Keller, Sr. consisting originally of twenty-three lots, on both sides of the Olean road in the eastern part of the township[2][3][4] Keller sold his lots at $20 and $30 each, good prices for those days, retaining 5⁄16 of an acre for his hotel and store.

The Red Bank post office was established May 13, 1842, with C. Shunk as postmaster.

[5] In 1913 A. M. Willison was postmaster, keeping the post office in his store.

G. A. Reichert, Salem Evangelical Lutheran Church is one of the oldest of the faith in the county.

In 1871 the Methodists erected a substantial house of worship with a congregation largely coming from nearby Widnoon.

This Armstrong County, Pennsylvania state location article is a stub.