Oldsmar, FL has a population of 14,023 and is the 2,983rd largest city in the United States. The population density is 1,564 per sq mi which is 433% higher than the Florida average and 1627% higher than the national average. The median age in Oldsmar is 39 which is approximately 6% lower than the Florida average of 42. In Oldsmar, 58% of the population over 15 years of age are married, 83% speak English and 9% speak Spanish. 30% of Oldsmar residents were born in Florida, 55% were born out of state, 3% were born outside of the United States and 12% were foreign born.