Machine translation of the Portuguese Wikipedia article (November 2026 version).
São Luís, also known as São Luís do Maranhão, is the capital of the Brazilian state of Maranhão. It is the only Brazilian state capital founded by the French, on 8 September 1612; it was later invaded by the Dutch and finally colonized by the Portuguese. It is located on Upaon-Açu Island in the South Atlantic, between the São Marcos and São José de Ribamar bays, in the Golfão Maranhense. In 1621, when Brazil was divided into two administrative units, the State of Maranhão and the State of Brazil, São Luís was the capital of the first unit. In 1997 the city's Historic Centre was declared a World Heritage Site by UNESCO.
With an estimated population of 1,090,229 inhabitants in 2026, São Luís is the most populous municipality in Maranhão and the fourth in the Northeast Region. Its area is 583 km², of which 211 km² is urban perimeter (the 12th largest urban area in the country). The municipality is the seat of the Ilha do Maranhão Planning Region (made up of the four municipalities on Upaon-Açu Island) and of the São Luís Metropolitan Region, which consisted of 13 municipalities with a total of 1,726,262 inhabitants in 2016. According to United Nations data from 2010, São Luís's Human Development Index (HDI) is 0.768, the 3rd best among the capitals of Brazil's Northeast Region and the 4th among all 1,794 municipalities in the region.
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