Fairfield is a city in and the county seat of Wayne County, Illinois, United States, and the location of Frontier Community College. The populati…Fairfield is a city in and the county seat of Wayne County, Illinois, United States, and the location of Frontier Community College. The population was 4,883 at the 2020 census. Fairfield is most famous for being the hometown of the "friendly" people, and for the Shelton Brothers Gang, notorious bootleggers who fought it out with the Harrisburg, Illinois-based Birger Gang to control criminal activities in Southern Illinois. During the first half of the 20th century, gang leaders Carl, Earl and Bernie Shelton made Fairfield a household name. Based on testimony of Charlie Birger himself, the Shelton Brothers were convicted for a 1925 unsolved mail carrier robbery of $15,000 and were sentenced to 25 years. They were released a few years later. Birger dominated bootlegging in Southern Illinois until he himself was hanged in Benton for the murder of West City Mayor Joe Adams in 1928. After serving their time, the Shelton brothers built a new criminal empire. Based in East St Louis, one of the most prosperous cities of its day, they controlled all vice from Peoria and southward.