DuPage County, Illinois (Fanning's, 1853)
Gazetteer/Almanac
DUPAGE COUNTY, situated in the northeasterly part of Illinois. Area, 396 square miles. Seat of justice, Napierville. Pop. in 1840, 3,535; in 1850, 9,290.
Fanning's Illustrated Gazetteer of the United States... (New York: Phelps, Fanning & Co., 1853), 109.