Iron County is a county located in the U.S. state of Utah. As of the 2010 census, the population was 46,163. Its county seat is Parowan,and the largest city is Cedar City. It was originally named Little Salt Lake Valley, and renamed for the iron mines west of Cedar City.

The Cedar City, UT Micropolitan Statistical Area includes all of Iron County.

According to the U.S. Census Bureau, the county has a total area of 3,302 square miles (8,550 km2), of which 3,297 square miles (8,540 km2) is land and 4.4 square miles (11 km2) (0.1%) is water.[3] A small part of Zion National Park extends northward into the county, near Kanarraville. Cedar Breaks National Monument is located entirely within the county, near its southeastern corner.

Iron County is located in beautiful Southern Utah and is often referred to as the gateway to the National Parks. The county seat is Parowan and the largest city in Iron County is Cedar City.