Headnote
MERCER COUNTY, situated on the west boundary of Illinois, with the Mississippi river on the west. Area, 550 square miles. Seat of justice, Millersburgh. Pop. in 1840, 2,352; in 1850, 5,246. (Fanning's, 1853)
    Place Unit Type
    County
    Containing Unit

    How to Cite This Page: "Mercer County, IL," House Divided: The Civil War Research Engine at Dickinson College, https://hddev.housedivided.dickinson.edu/node/16303.