Cedar Falls, city (1990 pop. 34,298), Black Hawk co., N Iowa, on the Cedar River; inc. 1854. It developed as a milling center in the late 19th-century after the coming of the railroad; its name is derived from the cedar tree. Largely residential, the city has light manufacturing. Cedar Falls is the seat of the Univ. of Northern Iowa and of the Evangelical Campgrounds, scene of the annual Interdenominational Bible Conference.