There are 12 soil types in the United States according to the soil order, the classification system for soil. The 12 types are:
Gelisols: Frozen
Histosols: Organic and wet
Spodosols: Salty and acidic
Andisols: Volcanic ash
Oxisols: Very weathered
Vertisols: They shrink and swell
Aridisols: Very dry
Ultisols: Weathered
Mollisols: Deep and fertile
Alfisols: Moderately weathered
Inceptisols: Slightly developed (young) soil
Entisols: Newly formed soil