Where Gypsum Is Found in the United States

Gypsum deposits occur in many states:

• Alabama: Mobile & Tombigbee River basins
• Alaska: Scattered occurrences
• Arizona: Alabaster Canyon
• Arkansas: Near Murfreesboro, Saline, Clark, Pike Counties
• California: 3rd in production; Imperial County (Plaster City), Riverside County (Midland)
• Colorado: Both slopes of Rockies
• Iowa: North central & southern
• Kansas: Central & western regions
• Louisiana: Northern parts
• Michigan: Iosco County (alabaster)
• Montana: Belt, Mosby, Stanford
• Nevada: Gerlach
• New Mexico: Extensive statewide
• New York: Niagara, Onondaga, Monroe, Suffolk Counties
• Ohio: Ottawa, Sandusky, Erie Counties
• Oklahoma: Western & central
• Oregon: Baker County (small amounts)
• South Dakota: Western, near Black Hills
• Texas: 4th in production; Guadalupe, Hudspeth, Parker, Dickens, Midland Counties
• Utah: Northeastern, central, southern
• Virginia: Smyth County
• Wyoming: Cody, Thermopolis, Newcastle, Lovell