Nova Iguaçu has a population of 843,046, making it the 21st largest place we list in Brazil. It is in Rio de Janeiro.
Nova Iguaçu holds 0.39% of Brazil's 213,562,666 people. São Paulo, the largest place we list there, is 15 times its size. Twenty years earlier the World Gazetteer recorded 1,002,118, a fall of 16%.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Natal | Rio Grande do Norte | 896,708 |
| Teresina | Piauí | 871,126 |
| Duque de Caxias | Rio de Janeiro | 866,347 |
| São Bernardo do Campo | São Paulo | 840,499 |
| João Pessoa | Paraíba | 817,511 |
| Sorocaba | São Paulo | 762,172 |
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.