Web camera Dunes Golf & Tennis Club, Sanibel, Lee County, Florida, USA - View of the golf course

Sanibel is an island and city in Lee County, Florida, United States. The population was 6,382 at the 2020 census. It is part of the Cape Coral-Fort Myers, Florida Metropolitan Statistical Area. The island, also known as Sanibel Island, constitutes the entire city. It is a barrier island—a collection of sand on the leeward side of the more solid coral-rock of Pine Island.

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Lee County is located in southwestern Florida, United States, on the Gulf Coast. As of the 2020 census, its population was 760,822. In 2022, the population was 822,453, making it the eighth-most populous county in the state. The county seat is Fort Myers, with a population of 86,395 as of the 2020 census, and the largest city is Cape Coral, with an estimated 2020 population of 194,016.

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Florida is a state in the Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia to the north, the Atlantic Ocean to the east; and the Straits of Florida and Cuba to the south. It is the only state that borders both the Gulf of Mexico and the Atlantic Ocean. With a population of over 21 million, it is the third-most populous state in the United States, the most populous among the easterly states, and ranks eighth in population density as of 2020. It spans 65,758 square miles (170,310 km2), ranking 22nd in area among the 50 states. The Miami metropolitan area, anchored by the cities of Miami, Fort Lauderdale, and West Palm Beach, is the state's largest metropolitan area with a population of 6.138 million, and the state's most-populous city is Jacksonville with a population of 949,611. Florida's other major population centers include Tampa Bay, Orlando, Cape Coral, and the state capital of Tallahassee.