Salt Lake County is located in the north central region of the state and is bordered on the east and west by mountains (Wasatch and Oquirrhs), creating a valley. Part of the Great Salt Lake is included. Salt Lake City is the county seat.

Salt Lake International Airport, major medical facilities, and television broadcasting serve all of Utah and parts of the Intermountain region. Government, including education, is the leading employer in the county.

The county is home to several public and private colleges and dozens of theatrical, musical, and dance organizations. Salt Lake County is noted for its ski resorts.