Acrelândia was Acre's first planned city. It became a municipality according to the Law 1025/92 as of April 28, 1992. The municipality was created from the separation of Plácido de Castro and Senador Guiomard municipalities. It was known through the slogan Princesinha do Acre (Acre's Little Princess). This made it reach a great agricultural development. Many people moved there from the Brazilian south-central region.