A city of Bureau county, Illinois, U.S.A., on the north bank of the Illinois River, in the northern part of the state, about 104 m. S.W. of Chicago. Pop. (1890), 3837; (1900), 6214 (2845 foreign-born); (1910) 7035. It is served by the Chicago, Burlington & Quincy, the Chicago, Rock Island & Pacific, the Chicago & North Western, and the Chicago, Ottawa & Peoria (electric) railways. Spring Valley is a shipping and distributing point for a large number of bituminous coalmines in its vicinity. It was chartered as a city in 1886.