Floyd County is located in northeastern central Iowa in the second tier of counties south of the Minnesota state line and in the fourth tier west of the Mississippi River. It is entirely within the Iowan drift soil area and practically all the soils in the county are glacial in origin.
Stevenson, W. H. and Brown, P. E., "Soil Survey of Iowa, Report No. 48—Floyd County Soils" (1927). Soil Survey Reports. 49.