Lake Wales, FL has a population of 15,206 and is the 2,800th largest city in the United States. The population density is 803 per sq mi which is 174% higher than the Florida average and 786% higher than the national average. The median age in Lake Wales is 36 which is approximately 14% lower than the Florida average of 42. In Lake Wales, 60% of the population over 15 years of age are married, 82% speak English and 17% speak Spanish. 41% of Lake Wales residents were born in Florida, 45% were born out of state, 4% were born outside of the United States and 9% were foreign born.