Sanibel is a city in Lee County, Florida, United States, on Sanibel Island. The population was 6,064 at the 2000 census, with an estimated 2006 population of 6,066. It is part of the Cape Coral–Fort Myers Metropolitan Statistical Area.
The main town is at the eastern end of the island. The city was formed in 1974 as a direct result of the main causeway being built in 1963 to replace the ferry, and the rampant construction and development that occurred afterward. Developers sued over the new restrictions, but the city and citizens prevailed in their quest to protect the island. The only buildings above two to three stories now on the barrier island were built during that period.
The city is on Sanibel Island on the Gulf coast of Southwest Florida, and is linked to the mainland by the Sanibel Causeway. A short bridge over Blind Pass links Sanibel to the unincorporated town of Captiva on Captiva Island. More than half of the two islands are preserved in its natural state as wildlife refuges. Visitors can drive, walk, bike, or kayak through the J. N. "Ding" Darling National Wildlife Refuge. The island's most famous landmark, the Sanibel Lighthouse, is located at the eastern end of the island, adjacent to the fishing pier. The main thoroughfare, Periwinkle Way, is where the majority of stores and restaurants are located, while the Gulf Drives (East, Middle and West) play host to most of the accommodations.