Farmington, UT has a population of 21,983 and is the 1,980th largest city in the United States. The population density is 2,212 per sq mi which is 6474% higher than the Utah average and 2341% higher than the national average. The median age in Farmington is 30 which is approximately 3% lower than the Utah average of 30. In Farmington, 67% of the population over 15 years of age are married, 94% speak English and 4% speak Spanish. 69% of Farmington residents were born in Utah, 28% were born out of state, 1% were born outside of the United States and 3% were foreign born.