Salt Lake County, Utah Utah Territory after traveling what settlers later called Emigration Canyon. Brigham Young, their leader, declared "This is the place" after seeing the valley. Compared to eastern regions, it seemed arid and unpromising to some of the migrants. Settlers used extensive irrigation to develop agriculture and the flourishing, self-sufficient city, known then as Great Salt Lake City. Thousands of Mormons joined them in the next several decades. The county was officially organized on January 31, 1850, with slightly more than 11,000 residents recorded. Mormon settlements were scattered across the valley and beyond. They relocated the territorial capital to Great Salt Lake
Salt Lake City population of today. Salt Lake City's street grid system is based on the north-south east-west grid plan developed by early church leaders, with the Salt Lake Temple constructed at the city's center. Due to its proximity to the Great Salt Lake, the city was originally named "Great Salt Lake City"; however, the word "great" was dropped from the official name in 1868 by the 17th Utah Territorial Legislature. Immigration of international members of the church, mining booms, and the construction of the first transcontinental railroad initially brought economic growth, and the city was nicknamed the Crossroads of the West. It