 A ten-block area of downtown Fairbury, including the courthouse square, is listed in the National Register of Historic Places as the Fairbury Commercial Historic District.Many of the buildings in the district have been little altered, and retain their original form and ornamentation almost intact.Three buildings remain from the first generation of Fairbury's downtown buildings, including the original Jefferson County courthouse and a false-front frame building; other architectural styles represented include Italianate, Queen Anne, a variety of revival styles, and 20th-century commercial architectural styles.