Great West Casualty Company is headquartered in a metro area that joins three states. Our corporate office is in South Sioux City, NE, just across the Missouri River from Sioux City, IA, and North Sioux City, SD, in a region nicknamed Siouxland. Home to more than 180,000 residents, the area offers affordable Midwest living, a vibrant downtown, a multitude of outdoor activities, live music, semi-pro sports, shopping and much more. Want to know more? Check out our 6 Reasons to Live in Siouxland video!