Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 22.
ALLEGAN COUNTY, situated in the southwestern part of Michigan, on Lake Michigan. Length about 35 miles; breadth, 20, with an area of about 700 square miles. The soil is generally rich alluvion. It is drained by Kalamazoo, Black, and Rabbit rivers. Courts are held at Allegan, the chief town. Pop. in 1840, 1,783; in 1850, 5,125.