Machine translation of the Portuguese Wikipedia article (November 2026 version).
Altamira is a Brazilian municipality located in the state of Pará, in the North Region of the country. Its estimated population in 2025 was 138,749 inhabitants. With an area of 159,533.328 km², according to IBGE in 2022, it ranks as the largest municipality in Brazil.
Until 2009 it was the largest municipality in the world by territorial extent, larger than ten Brazilian states, the Federal District, and several countries such as Portugal, Iceland, Ireland, Switzerland, among others. It lies at an altitude of 109 meters, at latitude 03º12'12" south and longitude 52º12'23" west.
The Trans-Amazonian Highway crosses the municipality from east to west over a stretch of 60 km, connecting Altamira to Belém (800 km), Marabá (510 km), Itaituba (500 km) and Santarém (570 km). A notable feature of the municipality is its hydrography: Altamira is set on the banks of the Xingu River, with its series of tributaries and waterfalls spread throughout the region.
Text: Wikipedia · CC BY-SA 4.0 · Read the full article on Wikipedia (in Portuguese)