Sanibel is a city located in Lee County Florida. With a 2020 population of 7,387, it is the 189th largest city in Florida and the 3827th largest city in the United States . Sanibel is currently declining at a rate of -0.09% annually but its population has increased by 14.19% since the most recent census, which recorded a population of 6,469 in 2010. Sanibel reached it's highest population of 7,408 in 2018. Spanning over 33 miles, Sanibel has a population density of 457 people per square mile.
The average household income in Sanibel is $171,104 with a poverty rate of 6.65%. The median rental costs in recent years comes to $1,545 per month, and the median house value is $721,200. The median age in Sanibel is 66.9 years, 68.9 years for males, and 65.5 years for females.