Umatilla, FL has a population of 3,639 and is the 7,867th largest city in the United States. The population density is 1,016 per sq mi which is 246% higher than the Florida average and 1022% higher than the national average. The median age in Umatilla is 44 which is approximately 6% higher than the Florida average of 42. In Umatilla, 73% of the population over 15 years of age are married, 95% speak English and 2% speak Spanish. 47% of Umatilla residents were born in Florida, 49% were born out of state, 2% were born outside of the United States and 3% were foreign born.