Springfield, city, seat (1818) of Clark county, west-central Ohio, U.S., on Buck Creek and Mad River, 25 miles (40 km) northeast of Dayton. The original settlement by James Demint and migrant Kentuckians in 1799 was on the site of the village of Old Piqua (birthplace of Tecumseh, the Shawnee chief). It was laid out in 1801 and probably named by the wife of Simon Kenton, an Indian scout who had settled there, for the springs in nearby cliffs. The arrival of the National (Cumberland) Road sustained its growth. The manufacture of farm machinery (for many years a leading industry) began there in 1855 when William Whiteley invented a successful reaper and mower. In the 1880s the journal Farm and Fireside was published in Springfield as a house organ by P.P. Mast; this formed the basis of the Crowell-Collier publishing ventures. One of the earliest programs of the 4-H Club movement of “learning by doing” for young people was started (1902) there by A.B. Graham. George Harrison Shull (born nearby in 1874) conducted his early hybrid corn (maize) experiments in Springfield, which is now the trading centre for a fertile agricultural area. Manufactures are well-diversified and include buses and heavy trucks, hoisting machinery, pumps and hydraulic equipment, metal enclosures, mops and brushes, funeral supplies, tools, and a variety of metal products. The city is the seat of Wittenberg University (Evangelical Lutheran Church in America; 1845) and Clark State Community College (1962). Inc. village, 1827; city, 1850. Pop. (2000) 65,358; Springfield Metro Area, 144,742; (2010) 60,608; Springfield Metro Area, 138,333.