Treasure Island is a city located in Florida. With a 2020 population of 7,011, it is the 200th largest city in Florida and the 3943rd largest city in the United States. Treasure Island is currently growing at a rate of 0.46% annually and its population has increased by 4.56% since the most recent census, which recorded a population of 6,705 in 2010. Treasure Island reached it's highest population of 7,450 in 2000. Spanning over 5 miles, Treasure Island has a population density of 4,535 people per square mile.
The average household income in Treasure Island is $106,883 with a poverty rate of 7.55%. The median rental costs in recent years comes to $1,249 per month, and the median house value is $380,100. The median age in Treasure Island is 56.9 years, 57.9 years for males, and 56.1 years for females. For every 100 females there are 85.9 males.