São Mateus do Maranhão
São Mateus do Maranhão  | |
|---|---|
Municipality  | |
Location in Maranhão  | |
| Country | Brazil | 
| Region | Nordeste | 
| State | Maranhão | 
| Mesoregion | Centro Maranhense | 
| Population  (2020 )  | |
 • Total  | 41,579 | 
| Time zone | UTC−3 (BRT) | 
São Mateus do Maranhão is a municipality in the state of Maranhão in the Northeast region of Brazil.
The municipality contains a small part of the Baixada Maranhense Environmental Protection Area, a 1,775,035.6 hectares (4,386,208 acres) sustainable use conservation unit created in 1991 that has been a Ramsar Site since 2000.