Jay County, Indiana
Founding: 1836 (declared in 1835) Parent county: Unorganized territory Namesake: John Jay, Founding Father Seat: Portland (1837–) Land area: 384 square miles Population (2020): 20,478 Population (historic): 3,863 (1840); 11,399 (1860); 19,282 (1880); 26,818 (1900); 20,846 (1930) Periods of population growth: pre-1840–1900; 1930–1950; 1960s; 1990s Subdivisions: Two cities; four towns; 12 townships Pre-1940 residences (estimated): 3,210 (34.8%) Pre-1940 housing survival rate: 58% Pre-1860 housing survival rate (1940): 6.4% Farm housing in disrepair (1950): 7.1% Nonfarm housing in disrepair (1950): 9.7% Average farmhouse value (1930): $1,155 Average outbuilding value (1930): $1,135 Average farmhouse size (1940): 6.7 rooms Number of farms (1920): 2,532 Average farm size (1920): 79.6 acres Sources of settlement: Ohio and Pennsylvania ______________________...