In March of 1839, the citizens of Blairstown (then Gravel Hill) and vicinity convened for the purpose of electing trustees of a Presbyterian church. John I. Blair was made chairman and Dr. John Albright secretary. Prior to this meeting, the practicing Christians were divided between the Presbyterians and the Methodists. The Presbyterians would take part in services by traveling to nearby towns or by gathering in their homes.
Two Presbyterian churches have stood at this site. The original church was erected by the fall of 1840 on a lot that was secured from the property of Mrs. William Hankinson. The church was a substantial stone structure that had a seating capacity for two hundred people, handsomely rough-cast Gothic windows and was surmounted by a well-proportioned belfry and spire. The bell, weighing two hundred eighteen pounds, was sometimes heard up and down the Paulins Kill as far away as Stillwater and Hainesburg. The church was dedicated on December 10, 1840, with Reverend Condit preaching the sermon. By 1845, Reverend John Reiley was installed as pastor. He was also referred to as the brainchild in the founding of what is now Blair Academy.
After thirty years it was decided that a larger church would be needed, and the original church was torn down. The cornerstone was laid in 1870, and the new church was
dedicated on February 16, 1872. It has more than double the seating capacity of the original church. The old bell was removed and taken to Blair Academy where it was used as a call bell until 1897, at which time it was melted down and made into tea bells bearing the inscription "Blairstown Presbyterian Church 1840." A new bell weighing one ton was put in place and still rings weekly, signaling the start of the Sunday worship service. In August of 1874, John I. Blair presented the church with a pipe organ that was made by Jardine & Son of New York.
The First Presbyterian Church of Blairstown has seen numerous and significant changes over its lifetime, but its faith and commitment to the community it serves have never wavered.