irememberSG - The six-digit postal code was introduced #onthisday in 1995 to improve efficiency in mail sorting. This old Singapore map depicts the 28 postal districts! One can pretty much guess that
![qgis - Splitting whole map of Singapore into different postal sectors - Geographic Information Systems Stack Exchange qgis - Splitting whole map of Singapore into different postal sectors - Geographic Information Systems Stack Exchange](https://i.stack.imgur.com/FfWG4.png)
qgis - Splitting whole map of Singapore into different postal sectors - Geographic Information Systems Stack Exchange
![Singapore buildings database with postal codes - HDB, condo, landed, commercial, industrial, etc - The world of Teoalida Singapore buildings database with postal codes - HDB, condo, landed, commercial, industrial, etc - The world of Teoalida](https://www.teoalida.com/wordpress/wp-content/uploads/Singapore-Buildings-Database.png)