Belleair Shore, FL has a population of 81 and is the 27,385th largest city in the United States. The population density is 1,362 per sq mi which is 364% higher than the Florida average and 1403% higher than the national average. The median age in Belleair Shore is 58 which is approximately 40% higher than the Florida average of 42. In Belleair Shore, 72% of the population over 15 years of age are married, 90% speak English and 0% speak Spanish. 12% of Belleair Shore residents were born in Florida, 75% were born out of state, 0% were born outside of the United States and 12% were foreign born.