
Marco Island
- County:
- Collier County
- County Seat:
- No
- Area (mi²):
- 12.157
- State:
- Florida
Marco Island is a city located in Collier County, Florida. Marco Island has a 2025 population of 16,508. Marco Island is currently growing at a rate of 0.91% annually and its population has increased by 4.73% since the most recent census, which recorded a population of 15,763 in 2020.
The average household income in Marco Island is $179,104 with a poverty rate of 6.33%. The median age in Marco Island is 67.7 years: 68 years for males, and 66.8 years for females.