Riley County, Kansas
Founding: 1855 Parent county: Unorganized territory Namesake: Bennet Riley, California military governor Seat: Ogden (1857–1858); Manhattan (1858–) Land area: 610 square miles Population (2020): 71,959 Population (historic): 1,224 (1860); 10,430 (1880); 13,828 (1900); 19,882 (1930) Periods of population growth: 1860–1890; 1900–1920; 1940–1980; 2000s Subdivisions: Five cities; one CDP; 14 townships Pre-1940 residences (estimated): 2,875 (9.5%) Pre-1940 housing survival rate: 43.8% Pre-1860 housing survival rate (1940): 7.9% Farm housing in disrepair (1950): 4.9% Nonfarm housing in disrepair (1950): 4.5% Average farmhouse value (1930): $1,835 Average outbuilding value (1930): $1,422 Average farmhouse size (1940): 5.9 rooms Number of farms (1920): 1,572 Average farm size (1920): 114.9 acres Sources of settlement: Sweden, Illinois, Ohio, Germany, ...