de Soto, KS
De Soto (pronounced /dəsoʊtoʊ/) is a city in Johnson and Leavenworth counties in the U.S. state of Kansas, along the Kansas River. The population was 4,561 at the 2000 census. The area code is 913, and the two zip codes are 66018 and 66019.
De Soto is located at 38°57′54″N 94°57′44″W / 38.965°N 94.96222°W / 38.965; -94.96222 (38.965081, -94.962285).
According to the United States Census Bureau, the city has a total area of 11.3 square miles (29.3 km²), all of it land.