Although peanuts come in many varieties, there are four basic types grown in the United States today. They are: Runner, Spanish, Valencia and Virginia. Each type is unique in size, shape and flavor. Runner peanuts are mainly grown in Alabama, Florida and Georgia, and over half of the Runner peanuts grown in the United States are used to make peanut butter. Spanish peanuts, grown mostly in Oklahoma and Texas, are primarily used to make candies and peanut oil. Valencia peanuts are mainly grown in New Mexico and are the sweetest of the four types. Virginia peanuts, grown in Virginia, North Carolina and South Carolina, are mainly roasted and sold in and out of the shell.