Texas has four major physical regions: Gulf Coastal Plains, Interior Lowlands, Great Plains and Basin and Mountain Range Province. The North Central Plains of Texas are part of the Interior Lowlands and characterized by 35 to 50 inches of annual rainfall, hilly forested land and coarse sand or clay soil.
The North Central Plains are bounded by the Caprock Escarpment to the west, the Edwards Plateau to the south and the Eastern Cross Timbers to the east. They have significantly more rainfall than other regions of Texas and are an important ranching, farming and timber cultivation region. They are hillier than the prairie land of the Gulf Coastal Plains, but not mountainous like the Basin and Mountain Range Province.