Oto Map
Oto is a city in Woodbury County, Iowa, United States. It is part of the Sioux City, IA–NE–SD Metropolitan Statistical Area. The population was 145 at the 2000 census.
Oto is located at 42°17?1?N 95°53?39?W / 42.28361°N 95.89417°W / 42.28361; -95.89417 (42.283676, -95.894047). It is situated near the Little Sioux River.
According to the United States Census Bureau, the city has a total area of 0.3 square miles (0.7 km²), all of it land.
Nearby cities include Hornick, Correctionville, Castana, Battle Creek, Cushing.