- Palmas is a city in the state of Tocantins, Brazil. It is the capital of the state and was founded on January 20, 1990, after Tocantins became a separate state from Goiás. Palmas is known for its modern architecture and urban planning, as it was planned and built to be the capital. It is located on the Tocantins River and has a population of approximately 300,000 people. The city has a growing economy, with a strong focus on agribusiness, trade, and services. Palmas also attracts tourists with its natural beauty, such as nearby waterfalls, lakes, and the Jalapão desert.