1,029,655, 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 borders Davis County to the north, Morgan County to the northeast, Summit County to the east, Wasatch County to the southeast, Utah County to the south, and Tooele County to the west.
Salt Lake County occupies the Salt Lake Valley, as well as parts of the surrounding mountains, the Oquirrh Mountains to the west and the Wasatch Range to the east (essentially the entire watershed of the Jordan River north of the Traverse Mountains). In addition, the northwestern section of the county includes part of the Great Salt Lake. The county is noted for its ski resorts; Salt Lake City won the bid to host the 2002 Winter Olympics.
Salt Lake County is part of the Salt Lake City, UT Metropolitan Statistical Area.