Rarotonga is the most populous island of the Cook Islands, with a population of 13,095 (census 2011), out of the country's total population of 17,794.
The Cook Islands' Parliament buildings and international airport are on Rarotonga. Because it is the most populous island, Cook Islanders may often be referred to as Rarotongan, but they may come from one of the other 14 islands in the group, such as Aitutaki or Mangaia. Rarotonga is a very popular tourist destination with many resorts, hotels and motels. The chief town, Avarua, on the north coast, is the capital of the Cook Islands.
The island is surrounded by a lagoon, which often extends more than a hundred metres to the reef, then slopes steeply to deep water. The reef fronts the shore to the north of the island, making the lagoon there unsuitable for swimming and water sports, but to the south east, particularly around Muri, the lagoon is at its widest and deepest. This part of the island is the most popular with tourists for swimming, snorkelling and boating. Agricultural terraces, flats and swamps surround the central mountain area.
