Shiloh is a village in St. Clair County, Illinois, United States. A 2005 census recorded a population of 11,000.HistoryA site known as "Three Springs" for its geological characteristics hosted an 11-day revival camp meeting in April 1807, which was the first in St. Clair County and possibly the second in Illinois Country, which was then part of Indiana Territory. It was organized by the Rev. William McKendree, Presiding Elder of the Western Conference and 4th Bishop of the Methodist Episcopal Church.This assembly inspired construction of the log Shiloh Meeting House on the site shortly afterward, being the first Methodist church in the county and second in the Illinois Country. This meeting house came to be the longest-organized United Methodist church in the state of Illinois, bequeathing its name to the village and township which grew up around it. Three members of this church played significant roles in state government in the effort to prevent slaveholding from gaining a foothold in Illinois.GeographyShiloh is located at .According to the 2010 census, Shiloh has a total area of 10.95sqmi, of which 10.86sqmi is land and 0.09sqmi is water.Shiloh is the site of Scott Air Force Base and is also the present eastern terminus of the Saint Louis area electric interurban Metrolink Red Line.