Decatur is the seat of Macon County, located on the Sangamon River in the geographical center of the state. Surrounded by rich farmlands, it is a trading, distribution, and railroad center, with heavy industry at the heart of its economy. The city was settled around 1821 and named for Commodore Stephen Decatur. Abraham Lincoln worked in the area as a lawyer from 1847 to 1857, and received his first endorsement for the Presidency at the Republican convention here in 1860. The municipal band, founded in 1857, is the nation's oldest.