Fanning's Illustrated Gazetteer of the United States... (New York: Phelps, Fanning & Co., 1853), 201.
MACOUPIN COUNTY, situated toward the western boundary of Illinois. Area, 800 square miles. Face of the country level, and soil productive. Watered by Macoupin river. Seat of justice, Carlinville. Pop. in 1835, 5,554; in 1840, 7,826; in 1850, 12,355.