Immediately following the close of the Civil War, a flourishing little town came into being on the east side of Miami County. Nicknamed "Little St. Louis", Louisburg quickly became a thriving town along the railroad track. Early settlers of this town were primarily Catholic, having a large influence in the founding of Immaculate Conception Church in 1887. In 1954, the church that now stands at 606 East Elm Street was built after 12 long years of raising funds. Immaculate Conception Church continues to be the 'nucleus' of our parish community, and serves as the meeting place of many generations of Louisburg Catholics.