Salt Lake County: 

Cities: Alta, Bluffdale, Cottonwood Heights, Draper, Herriman, Holladay, Midvale, Murray, Riverton, Salt Lake City, Sandy, South Jordan, South Salt Lake, Taylorsville, West Jordan, West Valley City.

Townships: Copperton, Millcreek (includes: Canyon Rim, East Millcreek, Millcreek and Mount Olympus), Emigration Canyon, Kearns, Magna, White City.

(County names linked to county government home pages. County seats in bold.)

Salt Lake County is the most populous county in Utah.
The county seat is Salt Lake City, which is also the state capital.

To assist those unfamiliar with this county,
major geographic areas include (North to South, West to East):
Salt Lake City,
West Valley City, Murray, Mill Creek/Holladay
West Jordan, Sandy City,
Herriman and Draper areas,
and greater unicorporated Salt Lake County, including the townships listed above.