Morton Grove is a village in Cook County, Illinois. Per the 2020 census, the population was 25,297.The village is named after former United States Vice President Levi Parsons Morton, who helped finance the Chicago, Milwaukee and St. Paul Railroad, which roughly tracked the North Branch of the Chicago River in the area and established a stop at the old Miller's Mill. Miller's Mill Road, now Lincoln Avenue, connected the former riverside sawmill to the township's central settlement.