Alturas, FL has a population of 3,679 and is the 7,818th largest city in the United States. The population density is 68 per sq mi which is 77% lower than the Florida average and 25% lower than the national average. The median age in Alturas is 45 which is approximately 9% higher than the Florida average of 42. In Alturas, 61% of the population over 15 years of age are married, 92% speak English and 8% speak Spanish. 51% of Alturas residents were born in Florida, 44% were born out of state, 1% were born outside of the United States and 3% were foreign born.