Itumbiara () is a municipality in Brazil, located in the southern part of the state of Goiás, on the border with Minas Gerais. It is a "sister city" to the Minas Gerais municipality of Araporã. The city lies south of the state capital, Goiânia, approximately 204 kilometers away, and 411 kilometers from the federal capital, Brasília. Covering an area of , Itumbiara is the thirteenth most populous municipality in Goiás, with a population of inhabitants according to the 2022 Census by the Brazilian Institute of Geography and Statistics (IBGE).
The history of Itumbiara dates back to the early 1820s, when a road was constructed across the Paranaíba River to connect Uberaba with central Goiás. The influx of settlers, drawn primarily by the road's construction, led to the establishment of a district named Santa Rita do Paranaíba in 1852. Following the Proclamation of the Republic, the municipality was officially established in 1909, still under the name Santa Rita do Paranaíba. The name "Itumbiara," derived from the Tupi language, was proposed by engineer Inácio Pais Leme, who oversaw the road's construction.
Itumbiara is regarded as the gateway to Goiás. It is also one of the state's largest exporters, owing to its proximity to Minas Gerais and São Paulo, which facilitates the distribution of agricultural products from southwestern Goiás to the South and Southeast regions. Key tourist attractions include the Paranaíba River, the Salitre Waterfall, the Beira Rio Lighthouse, and the Affonso Penna Bridge, which connects Goiás and Minas Gerais. Water sports are also popular in the city. The Ranking Connected Smart Cities, which identifies Brazil's most intelligent and high-potential cities, ranked Itumbiara as the 8th most intelligent and high-potential city in the Central-West Region and the 3rd in Goiás in 2021.
Etymology
In the Tupi language, the toponym Itumbiara translates to "Path to the Waterfall," derived from the combination of ytu ("waterfall") and piara ("path to"). Inácio Pais Leme, an explorer of the region, named a tax post along the road he built connecting the village of Santa Rita do Paranaíba (now a district of the municipality) to Cachoeira Dourada.
History Around 1824, General Cunha Matos initiated the construction of a road linking the Goiás locality of Anhanguera to the Minas Gerais city of Uberaba. The beginning and end of the road required the crossing of the Paranaíba River, which forms the border between Goiás and Minas Gerais.
This crossing was established at a port, where the state government set up a revenue collection post. As an interstate crossing, the post aimed to regulate traffic at that point. The fertile lands in the region, ideal for agriculture and cattle raising, coupled with this development, led to the gradual formation of a small settlement. The residents of this nascent urban center built a chapel and dedicated it to Saint Rita. In homage to their patron saint, the settlement was named Porto de Santa Rita.
On August 21, 1852, provincial resolution No. 18 elevated the area to the status of a district named Santa Rita do Paranaíba. It was established as a municipality by State Law No. 349 on July 16, 1909, under Governor Urbano Coelho de Gouveia. The municipality was officially established on October 12, 1909, and was elevated to city status by State Law No. 518 on July 27, 1915, and to a comarca by Law No. 621 on July 29, 1918. Despite the abundance of water surrounding the city, electricity was not introduced until 1933.
Itumbiara was the scene of two revolutions in the 1930s. The first significant conflict was part of the Revolution of 1930, pitting forces loyal to President Washington Luís against supporters of the reformist ideas of future President Getúlio Vargas. Approximately one hundred Itumbiara residents participated in this episode. Washington Luís Avenue, located in the city center, marks the site of the conflict. The second violent confrontation in the city occurred during the 1932 Constitutionalist Revolution, between the Army and rebel forces from São Paulo. This revolutionary movement, primarily composed of lawyers, teachers, merchants, and university students, aimed to demand immediate general elections for the President of the Republic, Deputies, and Senators, and the drafting of a new Brazilian Constitution. Although President Getúlio Vargas suppressed the São Paulo revolutionaries, elections were held in 1933, and Brazil transitioned to a state of law with the promulgation of the 1934 Constitution. The Affonso Penna Bridge still bears bullet marks from this episode in Brazilian history.
Engineer Inácio Pais Leme, who built the "Itumbiara" road from Santa Rita do Paranaíba to Cachoeira Dourada, forty kilometers from the city, proposed naming the municipality after the road, which in Tupi means "Path to the Waterfall." The Goiás government approved this suggestion.
Itumbiara's first municipal administrator was Mr. Antônio Joaquim da Silva, appointed shortly after its emancipation. Other pioneering figures who held significant roles during the municipality's establishment included Major Rogério Prates Cotrim, the first municipal judge; José Olimpio Xavier de Barros, Public Prosecutor; Pedro Gomes de Oliveira, Notary Public; and Major Militão Pereira de Almeida, the first police chief. In the Legislative Branch, pioneers included Jacinto Brandão as President and Colonel Sidney Pereira de Almeida as secretary.
Itumbiara's strategic geographic location has made it one of the most developed cities in Brazil's Central-West Region. The municipality has grown steadily and become one of Goiás's leading exporters, alongside the capital, Goiânia, and other cities such as Anápolis and Rio Verde.
The municipality lost parts of its geographic area with the emancipation of the districts of Panamá in 1952, Cachoeira Dourada in 1982—a major tourist attraction at the time of its emancipation—and Inaciolândia in 1993. It has hosted visits from eight Brazilian Presidents: Afonso Pena, Juscelino Kubitschek, Emílio Garrastazu Médici, Ernesto Geisel, João Batista de Oliveira Figueiredo, Fernando Collor de Mello, Fernando Henrique Cardoso, and Luiz Inácio Lula da Silva.
Geography Itumbiara spans an area of 2,461 km², accounting for 0.7237% of Goiás's territory, 0.1538% of the Central-West Region, and 0.029% of Brazil's total surface area. The urbanized area of the municipality covers 19.3424 km², making it one of the largest urbanized areas among Goiás municipalities. The city is situated at an elevation ranging from 320 to 448 meters, depending on the location, with the highest points not exceeding 800 meters. Itumbiara borders the following municipalities: Goiatuba, Panamá, and Buriti Alegre to the north; the state of Minas Gerais to the south; Buriti Alegre to the east; and Bom Jesus de Goiás and Cachoeira Dourada to the west.
The municipality features predominantly mountainous terrain with undulating sections, though most of the landscape is flat, ideal for agriculture and pasture. The Santa Rita Range, along the Paranaíba River, extends its foothills inland, separating water masses. Besides this range, there are several hills, none of which are particularly prominent. The region's altitude varies from 320 to 448 meters.
The vegetation cover of Itumbiara is typically formed by fields and cerrado, with common species including angico, aroeira, grasses, courbaril, nance, pequi, and sea hibiscus.
Itumbiara has no administrative regions and is divided into 58 neighborhoods. Among the most populous are Afonso Pena, Novo Horizonte, Vila Vitória, Nossa Senhora da Saúde, and Cidade Jardim.
Hydrography
Itumbiara is located within the Paraná River Basin, in the Paraná hydrographic region. The municipal seat is bathed by the Paranaíba River, Trindade Stream, and the Água Suja, Pombas, and Buriti creeks. The territory is also crossed by the Rio dos Bois and Meia Ponte River, along with notable streams such as Santa Maria, Campanha, Bom Sucesso, Boa Vereda, Medes, and Posses. Hundreds of smaller creeks are also present.
The Paranaíba River originates in Minas Gerais, in the Mata da Corda region, in the municipality of Rio Paranaíba, which shares the river's name. It is one of the tributaries forming the Paraná River, alongside the Rio Grande. The Rio dos Bois originates in the Congumé Range, in Americano do Brasil, and flows into the Paranaíba River. The Meia Ponte River has its source in the Brandões Range, in Itauçu.
Due to the significant energy potential of the Paranaíba River, large hydroelectric plants have been built in Itumbiara's territory, including the Itumbiara Hydroelectric Plant, the largest hydroelectric facility operated by Furnas Centrais Elétricas S.A., which forms an artificial lake.
Climate + Highest 24-hour precipitation accumulations recorded in Itumbiara by month (INMET) Month Accumulation Date Month Accumulation Date January 16/01/1991 July 25/07/2014 February 08/02/2004 August 23/08/1993 March 16/03/2019 September 29/09/1991 April 10/04/2011 October 05/10/2016 May 07/05/1995 November 05/11/2009 June 06/06/1997 December 12/12/2005 Period: 10/06/1989–present The climate of Itumbiara is tropical (type Aw according to the Köppen classification), with a wet season from October to April, characterized by moderately high temperatures, and a dry season from May to September, with milder temperatures. Autumn and spring serve as transitional seasons. Sudden temperature changes are common in the region. The most significant climatic variations occur from mid-August to January, when the weather becomes substantially hot, with apparent temperatures approaching or exceeding .
According to data from the National Institute of Meteorology (INMET), since June 1989, the lowest temperature recorded in Itumbiara was on July 18, 2000, and the highest reached on October 7, 2020. The highest 24-hour precipitation accumulation was on December 12, 2005. Accumulations of or more were also recorded on December 27, 1996 (), March 16, 2019 (), December 8, 2003 (), and January 16, 1991 ().
Demography According to the 2022 census by the Brazilian Institute of Geography and Statistics (IBGE), Itumbiara's population was inhabitants, making it the 12th most populous municipality in Goiás, with a population density of 44.1 inhabitants per km2. The 2010 census reported that 50.7% of the population were women ( inhabitants), 49.3% were men ( inhabitants), 95.8% ( inhabitants) lived in the urban area, and 4.2% ( inhabitants) resided in the rural area.
Itumbiara's population grew by 14.14% over the last decade. Between 1991 and 2000, the municipality recorded an average annual population growth rate of 2.97%, increasing from inhabitants in 1991 to in 2000. However, the urbanization rate grew by only 2.66%, rising from 63% in 1991 to 64.67% in 2000. In 2000, the municipality's population accounted for 1.82% of Goiás's population and 0.04% of Brazil's population.
Ethnic composition The cultural, political, and economic influences inherited from the Portuguese are prominent and defining in Itumbiara. However, looking further back in history, the contributions of Indigenous peoples to the ethnic composition cannot be overlooked. Indigenous groups were the first to inhabit Brazil.