Winter Haven, FL has a population of 36,669 and is the 1,148th largest city in the United States. The population density is 1,150 per sq mi which is 292% higher than the Florida average and 1169% higher than the national average. The median age in Winter Haven is 44 which is approximately 6% higher than the Florida average of 42. In Winter Haven, 54% of the population over 15 years of age are married, 83% speak English and 11% speak Spanish. 44% of Winter Haven residents were born in Florida, 42% were born out of state, 5% were born outside of the United States and 9% were foreign born.