South Jordan is a city in south central Salt Lake County, Utah, United States, 18 miles (29 km) south of Salt Lake City. Part of the Salt Lake City metropolitan area, the city lies in the Salt Lake Valley along the banks of the Jordan River between the 10,000-foot (3,000 m) Oquirrh Mountains and the 11,000-foot (3,400 m) Wasatch Mountains. The city has 3.5 miles (5.6 km) of the Jordan River Parkway that contains fishing ponds, trails, parks, and natural habitats. The Salt Lake County fair grounds and equestrian park, 67-acre (27 ha) Oquirrh Lake, and 37 public parks are located inside the city. As of 2020, there were 77,487 people in South Jordan.

Salt Lake County is located in the U.S. state of Utah. As of the 2020 United States census, the population was 1,185,238, making it the most populous county in Utah. Its county seat and largest city is Salt Lake City, the state capital. The county was created in 1850. Salt Lake County is the 37th most populated county in the United States and is one of four counties in the Rocky Mountains to make it into the top 100. Salt Lake County has been the only county of the first class in Utah – under the Utah Code is a county with a population of 700,000 or greater. Although, Utah County directly to the south has recently reached this threshold.