Map of Rondônia
Rondônia is a first-level division of Brazil. Its largest mapped city is Porto Velho, with about 306,180 people in the metropolitan area. The interactive map below is centred on Rondônia, and the tables list its 5 mapped cities.
- Cities Mapped
- 5
- Largest City
- Porto Velho
- Country
- Brazil
Interactive Map of Rondônia
About Rondônia
Rondônia (English: , ron-DOHN-ee-ə ; Brazilian Portuguese: [ʁõˈdõnjɐ] ) is one of the 26 states of Brazil, located in the North Region (the central-western part). It is bordered by Acre in the west,
Amazonas in the north, Mato Grosso in the east, and Bolivia in the south. Rondônia has a population of 1,815,000 as of 2021. It is the fifth least populated state. Its capital and largest city is Porto Velho, bathed by the Madeira River. The state was named after Cândido Rondon, who explored the north of the country during the 1910s. The state, which is home to c. 0.7% of the Brazilian population, is responsible for c. 0.3% of the Brazilian GDP.
The state has 52 municipalities and occupies an area of 237,590.547 km2, equivalent to the territory of Romania and almost five times larger than Slovakia or the Dominican Republic. In addition to this, there are other important cities such as Ariquemes, Cacoal, Guajará-Mirim, Ji-Paraná, Rolim de Moura and Vilhena.
Summary adapted from Wikipedia: Rondônia (CC BY-SA 4.0).

Rondônia in Depth
History
It is generally accepted by linguists that the area of modern Rondônia is the origin of the Tupian languages.
The Spaniard Ñuflo de Chávez was the first European explorer to reach the valley of the Guaporé River between 1541 and 1542, although he only passed through. Bandeirantes arrived in the region around 1650, with the goal of exploiting the gold and other minerals of the territory. In the same period, Jesuit priests came to the region and founded the first village.
As a consequence of the discovery of gold on the right bank of the Guaporé River, the Portuguese Crown founded the Captaincy of Mato Grosso in 1748 with Antonio Rolim de Moura Tavares as governor.
Geography
Rondônia used to be home to over 200,000 km2 of rainforest, but has become one of the most deforested places in the Amazon. By 2003 around 70,000 km2 of rainforest had been cleared.
The area around the Guaporé River is part of the Beni savanna ecoregion.
Economy
The economy of the state of Rondônia has, as main activities, agriculture, livestock, food industry and vegetal and mineral extraction. In 2016, the state's GDP reached R$39.451 billion. Its export basket is mainly composed of frozen beef (43.43%), soy (32.77%), raw tin (7.08%), sawn wood (2.36%) and edible giblets (2.02%).
Beginning in the 1970s, the state attracted farmers from the south-central part of the country, stimulated by the federal government's colonization projects and the availability of cheap and fertile land for illegal logging. The development of agricultural activities has transformed the area into one of the main agricultural frontiers in the country and one of the most prosperous and productive regions in northern Brazil.
Demographics
It is the third most populous state in the North Region with 1,815,278 inhabitants, according to an estimate by IBGE for 2021, being surpassed only by Pará and Amazonas. The population density was 6.6 inhabitants/km2.
Urbanization: 66.8% (2004); Population growth: 2.2% (1991–2000); Houses: 430,747 (2005). Four of its municipalities have a population above 100,000 inhabitants, these being Porto Velho, Ji-Paraná, Ariquemes and Vilhena.
The 2022 census revealed the following numbers: 936,708 Brown (Multiracial) people (59.2%), 486,123 White people (30.7%), 136,793 Black people (8.7%), 17,278 Amerindian people (1.1%), 4,257 Asian people (0.3%).
Sections adapted from Wikipedia: Rondônia (CC BY-SA 4.0).
Rondônia: Key Facts
| Population | 1,581,196 (2022) |
|---|---|
| Area | 237,765 km² |
| Capital | Porto Velho |
| Head of government | Marcos Rocha |
| Established | 4 January 1982 |
Facts from Wikidata Q43235 (CC0).
History of Rondônia: Empires and States
The atlas records 6 polities whose mapped territory included part of Rondônia, from The Portuguese Empire in 1748 CE to 2024 CE. They are listed in the order they first appear.
| Polity | Period here |
|---|---|
| The Portuguese Empire | 1748–1823 CE |
| Empire of Brazil | 1822–1889 CE |
| Brazilian Republic | 1890–1966 CE |
| Unitary State of Brazil | 1932–1945 CE |
| Federated Republic of Brazil | 1967–1986 CE |
| Republic of Brazil | 1987–2024 CE |
Historical Maps of Rondônia
Rondônia on the world map in each year one of these states held it:
Derived by testing mapped cities against dated territorial polygons. Dates are when the polygons cover this place, not the polity's whole lifespan, and polities absent from the source dataset are not listed.
Largest Cities in Rondônia
5 cities mapped. Ranked by metropolitan population. A port city's harbour is written up on the page of its sea.
| # | Name | Population | Region | Role |
|---|---|---|---|---|
| 1 | Porto Velho | 306,180 | Rondônia | Admin-1 capital |
| 2 | Guajara-Miram | 69,586 | Rondônia | Populated place |
| 3 | Vilhena | 63,231 | Rondônia | Populated place |
| 4 | Ariquemes | 58,096 | Rondônia | Populated place |
| 5 | Pimenta Bueno | 25,762 | Rondônia | Populated place |
Rondônia: Quick Answers
- Where is Rondônia?
- Rondônia is a first-level division of Brazil, in South America. Its mapped cities centre on 10.7693° S, 62.7313° W.
- What is the largest city in Rondônia?
- Porto Velho is the largest city mapped in Rondônia, with a metropolitan population of about 306,180.
- How many cities are in Rondônia?
- YearMaps maps 5 cities and towns in Rondônia, with a combined metropolitan population of about 522,855. This counts mapped settlements, not every municipality.