 oronoco is a city in olmsted county, minnesota, united states, along the middle fork of the zumbro river. the population was 1,300 at the 2010 census.{{cite web|title=2010 census redistricting data (public law 94-171) summ
Cities_in_Minnesota Cities_in_Olmsted_County,_Minnesota Populated_places_established_in_1854 Rochester,_Minnesota_metropolitan_area Zumbro_River