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Estrada de Ferro Madeira-Marmoré Steam Locomotive.jpg
Flag of Guajará-Mirim
Coat of arms of Guajará-Mirim
Coat of arms
Location in Rondônia  state
Location in Rondônia state
Guajará-Mirim is located in Brazil
Location in Brazil
Coordinates: 10°46′58″S 65°20′22″W / 10.78278°S 65.33944°W / -10.78278; -65.33944Coordinates: 10°46′58″S 65°20′22″W / 10.78278°S 65.33944°W / -10.78278; -65.33944
Country  Brazil
Region North Region
State Rondônia
 • Total 24,856 km2 (9,597 sq mi)
Population (2015)
 • Total 46,632
 • Density 1.9/km2 (4.9/sq mi)
Time zone BRT-1 (UTC-4)

Guajará-Mirim is a municipality in the Brazilian state of Rondônia. It is located at an altitude of 128 meters. Its population was 46,632 (2015) and its area is 24,856 km².[1]


Guajará-Mirim lies along the Mamoré River, just across the Bolivian border town of Guayaramerín. It was once the southern terminus of the Estrada de Ferro Madeira-Mamoré (the Madeira-Mamoré Railway), which was inaugurated in 1912. It is the seat of the Roman Catholic Diocese of Guajará-Mirim.


The municipality contains the 22,540 hectares (55,700 acres) Traçadal Biological Reserve, a strictly protected area that was created in 1990.[2] It contains 2.33% of the 216,568 hectares (535,150 acres) Guajará-Mirim State Park, created in 1990.[3] It contains the 46,438 hectares (114,750 acres) Rio Ouro Preto Biological Reserve, created in 1990.[4] It contains 73.45% of the 204,632 hectares (505,660 acres) Rio Ouro Preto Extractive Reserve, also created in 1990.[5] The municipality contains 47.5% of the 146,400 hectares (362,000 acres) Rio Cautário State Extractive Reserve, created in 1995.[6] It contains the 73,818 hectares (182,410 acres) Rio Cautário Federal Extractive Reserve, created in 2001.[7]


  1. ^ IBGE - [1]
  2. ^ REBIO do Traçadal – ISA, Informações gerais.
  3. ^ PES de Guajará-Mirim – ISA, Informações gerais.
  4. ^ REBIO do Rio Ouro Preto – ISA, Informações gerais.
  5. ^ RESEX do Rio Ouro Preto – ISA, Informações gerais.
  6. ^ RESEX Rio Cautário (Estadual) – ISA.
  7. ^ RESEX do Rio Cautário – ISA, Informações gerais.