The Till Plains consists of flat to gently rolling plains with heavy till soils. Most of the relief within the Till Plains is located in three end moraines that lie in an east-west orientation. The majority of the Till Plaines consists of flatter, ground moraines which lie between the end moraines. Besides glacial till, lacustrine sediments and alluvial deposits along the drainage system of the Sandusky River are found. Dominant soils are Hapludalfs, Ochraqualfs, Fragiaqualfs, Medisaprists, Fluvaquents, and Argiaquolls.
Textures are mainly silt loam and silty clay loam.
Average annual precipitation ranges from 881 mm at Fremont to 964 mm at Bucyrus.