This list contains Puerto Rico postal codes. Data can be fetched with REST APIs, and it's possible to manage it with any programming language. Source: Geonames. Caribbean island
This is a ready-to-use database containing all the cities in Portugal. All data can be fetched through REST and GraphQL APIs, or just by cloning the database to your app. Data source: GeoNames.
Database with postal codes from Palau. Data can be fetched by APIs or GraphQL. Source: Geonames.
Database with postal codes from Reunion Island. Source: Geonames.
Here you can find a list of all the postal codes in Romania. It's ready to use, you only need to clone it, or connect your Back4App app! Source: Geonames.
This is a comprehensive list with Serbia postal codes. It can be fetched with any programming language, e.g, Javascript, Python, Swift, Dart, Java, etc. Source: Geonames.
Dataset and API with all the cities in Russia.
This is a detailed dataset with more the 40k records of Russia Zip Codes. The database is Free to use, download, and developers can fetch data using GraphQL and REST APIs. The supported programming languages are NodeJS, PHP, Swift, Objective-C, Dart, Flutter, Java, Javascript, Kotlin, etc.
A dataset containing all the postal codes from Sweden. It is free to use, download, and developers can consume data using GraphQL and REST APIs. Source: Geonames.
Postal codes from Singapore. The dataset is open-source and can be used with any programming language. Source: Geonames.