Salt Lake City, UT has a population of 191,446 and is the 127th largest city in the United States. The population density is 1,722 per sq mi which is 5018% higher than the Utah average and 1800% higher than the national average. The median age in Salt Lake City is 32 which is approximately 5% higher than the Utah average of 30. In Salt Lake City, 46% of the population over 15 years of age are married, 73% speak English and 16% speak Spanish. 48% of Salt Lake City residents were born in Utah, 34% were born out of state, 1% were born outside of the United States and 18% were foreign born.