Marco Island is a city located in Florida. With a 2020 population of 18,142, it is the 124th largest city in Florida and the 2002nd largest city in the United States. Marco Island is currently growing at a rate of 0.59% annually and its population has increased by 10.53% since the most recent census, which recorded a population of 16,413 in 2010. Spanning over 25 miles, Marco Island has a population density of 1,492 people per square mile.
The average household income in Marco Island is $129,120 with a poverty rate of 7.31%. The median rental costs in recent years comes to $1,595 per month, and the median house value is $598,200. The median age in Marco Island is 65.3 years, 66.6 years for males, and 64.2 years for females. For every 100 females there are 96.2 males.