Coordinates: 09°25′58″S 70°29′34″W / 9.43278°S 70.49278°W / -9.43278; -70.49278
Santa Rosa do Purus is the smallest municipality in the Brazilian state of Acre. It is located in the center of the state with the border of the Republic of Peru just across the river. Its population is 3 948 and its area is 5,981 km². Santa Rosa do Purus is one of the remotest communities in Brazil. 82% of the population is living in rural districts. The town of Santa Rosa lies on the banks of the Purus River. The only way to reach this town is by a two-three-day journey upriver by boat or by light aircraft. The only street is lined on either side with boxy, Monopoly-like wooden houses with corrugated metal roofs.
Connected to the ECT network since 2003, the local post office offers online operations and Internet access. This technological progress is a first in the history of the town, which previously had only two means of communication: the local radio station and the church's loudspeaker. The arrival of the Post Bank has made it easier for the town council to pay the salaries of its employees and those of state officials. The post office also collects municipal, state and federal taxes.
 Municipalities of Acre | | | Capital: Rio Branco | | | Brasiléia | |  | | | Rio Branco | Acrelândia, Bujari, Capixaba, Plácido de Castro, Porto Acre, Rio Branco, Senador Guiomard, Sena Madureira, Manoel Urbano, Santa Rosa do Purus, Sena Madureira | | | Cruzeiro do Sul | | | | Tarauacá | | |
