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Castanhal: population and official figures

Population (IBGE estimate, 1 July)
210,592
2026
Population, 2022 census
192,256
2022
Area (km²)
1,029.3
2022
People per km² (2022 census)
186.8
2022

In depth

What is the population of Castanhal?

IBGE, Brazil's national statistics institute, estimated the population of Castanhal at 210,592 on 1 July 2026, the 155th largest of Brazil's 5,570 municipalities, the 6th largest of the 144 municipalities in Pará state. The 2022 census counted 192,256 residents.

Source: Instituto Brasileiro de Geografia e Estatística (IBGE) · saved copy

Is the population of Castanhal growing?

Between the 2010 and 2022 censuses the population of Castanhal grew by 19,107, from 173,149 (2010 count adjusted to 2022 boundaries) to 192,256, an average of +0.88% a year; the 156th fastest of 320 major Brazilian cities (Brazil: +0.52% a year).

Source: Instituto Brasileiro de Geografia e Estatística (IBGE) · saved copy

How has the population of Castanhal changed since the 2022 census?

IBGE's estimates put Castanhal's population 18,336 above the 2022 census count by July 2026 (+9.5%), against +5.5% for Brazil as a whole; the estimate was 209,126 in 2025 and 207,603 in 2024.

Source: Instituto Brasileiro de Geografia e Estatística (IBGE) · saved copy

How big is Castanhal?

Castanhal covers 1,029.3 km² and had 186.8 residents per km² at the 2022 census, the 101st least densely populated of 320 major Brazilian cities (Brazil: 23.86 per km²).

Source: Instituto Brasileiro de Geografia e Estatística (IBGE) · saved copy

What share of Pará state's population lives in Castanhal?

Castanhal holds 2.4% of the estimated 8,756,324 people in Pará state and 0.10% of Brazil's 214,211,951 (2026 estimates).

Source: Instituto Brasileiro de Geografia e Estatística (IBGE) · saved copy

Is Castanhal a metropolis?

IBGE's urban hierarchy (REGIC) ranks Castanhal as a regional capital, level 2C on a scale whose top level is 1A, and Castanhal is part of the Região Metropolitana de Belém.

Source: Instituto Brasileiro de Geografia e Estatística (IBGE) · saved copy

More figures

Who runs Castanhal?

In Brazil, cities and towns are run by municipalities: Mayor (prefeito) and council (câmara de vereadores) directly elected for four years; mayors can serve two terms in a row. Primary schools, basic health care, urban planning, local transport, waste; each has its own organic law.

How local power works in Brazil

Cities of a similar size in Brazil

Up a level: all cities in Brazil · Brazil · government and power

Sources

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