Pike County, Illinois
Founding: 1821 Parent counties: Bond, Clark, and Madison Namesake: Zebulon Pike, American explorer Seat: Cole's Grove (1821–1824); Atlas (1824–1833); Pittsfield (1833–) Land area: 831 square miles Population (2020): 14,739 Population (historic): 2,396 (1830); 18,819 (1850); 30,768 (1870); 31,595 (1900); 24,357 (1930) Periods of population growth: pre-1830–1880; 1890s; 1930s Subdivisions: Three cities; 14 villages; one town; 24 townships Pre-1940 residences (estimated): 2,470 (30.9%) Pre-1940 housing survival rate: 39.7% Pre-1860 housing survival rate (1940): 10.2% Farm housing in disrepair (1950): 15.1% Nonfarm housing in disrepair (1950): 10.3% Average farmhouse value (1930): $1,391 Average outbuilding value (1930): $1,176 Average farmhouse size (1940): 5.8 rooms Number of farms (1920): 3,381 Average farm size (1920): 110.9 acres Sources of settle...