Dickinson county is located in northwestern Iowa, in the northern tier of counties bordering the state of Minnesota and in the third tier of counties east of the South Dakota state line. Its location is shown on the accompanying sketch map. It lies in the Wisconsin drift soil area and all the soils are of glacial origin.
Stevenson, W. H. and Brown, P. E., "Soil Survey of Iowa, Report No. 37—Dickinson County Soils" (1924). Soil Survey Reports. 40.