Salt Lake County, Utah in the context of "South Salt Lake, Utah"

Salt Lake City, often shortened to Salt Lake or SLC, is the capital and most populous city of the U.S. state of Utah. It is the county seat of Salt Lake County, the most populous county in the state. The population was 199,723 at the 2020 census, while the Salt Lake City metropolitan area has an estimated 1.3 million residents and is the 46th-largest metropolitan area in the United States. It is also part of the larger Salt Lake City–Ogden–Provo combined statistical area, an urban corridor along a 120-mile (190 km) segment of the Wasatch Front with a population of approximately 2.8 million. It is one of the principal urban centers within the Great Basin, along with Reno, Nevada.

Salt Lake City was founded in 1847 by settlers led by Brigham Young who were seeking to escape persecution they had experienced while living farther east. The Mormon pioneers, as they would come to be known, entered a semi-arid valley and immediately began building an extensive irrigation network that could feed the population and foster future growth. Salt Lake City's street grid system is based on a standard compass grid plan, with the southeast corner of Temple Square serving as the origin of the Salt Lake meridian. Owing to its proximity to the Great Salt Lake, the city was originally named Great Salt Lake City; the word "Great" was dropped from the city's name in 1868. Immigration of international members of the Church of Jesus Christ of Latter-day Saints (LDS Church), mining booms, and the construction of the first transcontinental railroad brought economic growth, and the city was nicknamed "The Crossroads of the West". It was traversed by the Lincoln Highway, the first transcontinental highway, in 1913. Two major cross-country freeways, I-15 and I-80, now intersect in the city. The city also has a belt route, I-215.

A metro township was a type of municipal government in Utah equivalent to a civil township. These were first allowed in Utah starting in 2015 (per Senate Bill 199 – the Community Preservation Act) both to allow existing unincorporated communities to avoid piecemeal annexation, and to give those residents some say in local government, without creating additional government overhead. While each metro township had a mayor and township council, managed a budget, and could not be annexed without its permission, its powers of taxation were limited, and it had to contract with other municipalities and/or municipal shared-service districts for most municipal services (police, for example). The five metro townships – all located in Salt Lake County – were Kearns, Magna, Copperton, Emigration Canyon and White City. In March 2024, Governor Spencer Cox signed a bill that eliminated the metro township designation, converting the five existing metro townships into cities with taxing authority.

West Jordan is a city in Salt Lake County, Utah, United States. It is a suburb of Salt Lake City. According to the 2020 Census, the city had a population of 116,961, placing it as the third most populous in the state. The city occupies the southwest end of the Salt Lake Valley at an elevation of 4,330 feet (1,320 m). Named after the nearby Jordan River, the limits of the city begin on the river's western bank and end in the eastern foothills of the Oquirrh Mountains, where Kennecott Copper Mine, the world's largest man-made excavation, is located.

Settled in the mid-19th century, the city has developed into its own regional center. As of 2012, the city has four major retail centers; with Jordan Landing being one of the largest mixed-use planned developments in the Intermountain West. Companies headquartered in West Jordan include Mountain America Credit Union, Lynco Sales & Service, SME Steel, and Cyprus Credit Union. The city has one major hospital, Jordan Valley Medical Center, and a campus of Salt Lake Community College.

The Salt Lake City metropolitan area is the metropolitan area centered on the city of Salt Lake City, Utah. The Office of Management and Budget and the United States Census Bureau currently define the Salt Lake City, Utah Metropolitan Statistical Area (MSA) as comprising two counties: Salt Lake and Tooele. As of the 2020 census, the MSA had a population of 1,257,936. The Salt Lake City Metropolitan Area and the Ogden-Clearfield Metropolitan Area were a single metropolitan area known as the Salt Lake City-Ogden Metropolitan Area until being separated in 2005.

The metropolitan area is part of the Salt Lake City–Provo–Ogden, UT Combined Statistical Area (CSA), which also includes the Ogden–Clearfield metropolitan area, the Provo–Orem metropolitan area, the Heber City, Utah micropolitan area, and the Brigham City, Utah micropolitan area. As of the 2020 census, this CSA had a population of 2,701,129, comprising 82.6 percent of Utah's then 3,271,616 residents.

Interstate 80 (I-80) is a part of the Interstate Highway System that runs from San Francisco, California, to Teaneck, New Jersey. The portion of the highway in the US state of Utah is 197.51 miles (317.86 km) long through the northern part of the state. From west to east, I-80 crosses the state line from Nevada in Tooele County and traverses the Bonneville Salt Flats—which are a part of the larger Great Salt Lake Desert. It continues alongside the Wendover Cut-off—the corridor of the former Victory Highway—US Route 40 (US-40) and the Western Pacific Railroad Feather River Route. After passing the Oquirrh Mountains, I-80 enters the Salt Lake Valley and Salt Lake County. A short portion of the freeway is concurrent with I-15 through Downtown Salt Lake City. At the Spaghetti Bowl, I-80 turns east again into the mouth of Parleys Canyon and Summit County, travels through the mountain range, and intersects the eastern end of I-84 near Echo Reservoir before turning northeast toward the Wyoming border near Evanston. I-80 was built along the corridor of the Lincoln Highway and the Mormon Trail through the Wasatch Range. The easternmost section also follows the historical routes of the first transcontinental railroad and US-30S.

Construction of the controlled-access highway began in the 1950s, and, by the late 1970s, most of the freeway across the state of Utah had been completed. The 4.5-mile-long (7.2 km) section of I-80 between State Route 68 (SR-68, Redwood Road) and Salt Lake City International Airport was the last piece of the nearly 2,900-mile-long (4,700 km) freeway to be completed. It was opened on August 22, 1986, and was about 50 miles (80 km) from the site of another cross-country milestone in Utah, the driving of the golden spike of the first transcontinental railroad at Promontory Summit. Average daily traffic volumes in 2012 ranged between 6,765 vehicles using the freeway at SR-58 and 121,205 vehicles using the freeway at the Spaghetti Bowl in Downtown Salt Lake City. Throughout the state, the highway is also known as the Purple Heart Trail.