If you are looking to create an art piece or visualization using this data, here are a few directions: Download Brazil Shapefiles: Municipalities & Zip codes
You can find specific postal code lists on DataHub (covering major locations) or more comprehensive, paid datasets with over 1.3 million records at GeoPostcodes . Download Brazil zip
The geobr package (available for R and Python) allows you to download harmonized official spatial data for Brazil, including administrative boundaries and potentially census-related postal areas. If you are looking to create an art