Farmington, AR has a population of 6,470 and is the 5,481st largest city in the United States. The population density is 658 per sq mi which is 1087% higher than the Arkansas average and 627% higher than the national average. The median age in Farmington is 34 which is approximately 11% lower than the Arkansas average of 38. In Farmington, 66% of the population over 15 years of age are married, 95% speak English and 5% speak Spanish. 55% of Farmington residents were born in Arkansas, 41% were born out of state, 0% were born outside of the United States and 4% were foreign born.