Porto Velho

Porto Velho
Municipality
Município de Porto Velho Municipality of Porto Velho
Top left:Rondonia State Government Office, Top right:Port of Porto Velho, Middle left:Porto Velho Cultural House, Middle right:Sunset in Madeira River, Bottom:Panorama view of downtown from Pedrinhas area
Flag Seal
Location of Porto Velho in the State of Rondônia
Porto Velho Localization of Porto Velho in Brazil
Coordinates: 8°45′43″S 63°54′14″W / 8.76194°S 63.90389°W / -8.76194; -63.90389
Country	Brazil
Region	North
State	Rondônia
Founded	October 2, 1914
Government
• Mayor	Hildon Chaves (PSDB)
Area
• Total	34,082.37 km2 (13,159.28 sq mi)
Elevation	83 m (272 ft)
Population  (2021 [1])
• Total	548,952
• Density	16/km2 (42/sq mi)
Time zone	UTC−4 (AMT)
Postal code	76800-001 to 76849-999
Area code	+55 69
HDI (2010)	0.736 – high[2]
Website	www.portovelho.ro.gov.br

Porto Velho (Portuguese pronunciation: [ˈpoʁtu ˈvɛʎu], Old Port) is the capital of the Brazilian state of Rondônia, in the upper Amazon River basin. The population is 548,952 people (as of the IBGE 2021 estimation). Located on the border of Rondônia and the state of Amazonas, the town is an important trading center for cassiterite, the mining of which represents the most important economic activity in the region, as well as a transportation and communication center. It is on the eastern shore of the Madeira River, one of the main tributaries of the Amazon River. It is also Rondônia's largest city, and the largest state capital of Brazil by area.

The municipality occupies most of the border between Amazonas and Rondônia, and is both the westernmost and northernmost city in the state.