Postal codes in Singapore

[2] 277 Orchard RoadSingapore 9 This was superseded by a new four-digit system on 1 July 1979, with the last two digits representing a sector in each district.

[3] 277 Orchard RoadSingapore 0923 On 1 September 1995, this was replaced by a six-digit system, in which every building was given its unique postcode, the first two digits of which represented the old sector, i.e.

[4][5] 277 Orchard RoadSingapore 238858 Although the old districts are no longer used by Singapore Post, they are still widely used to refer to locations of properties for sale or rent.

This means that the codes for a particular postal sector have been assigned first to houses and buildings located along street names beginning with 'A', followed by 'B' and so on.

For example, in Google Maps and Citymapper, the user can conveniently locate a Singaporean building by only supplying its 6-digit postal code, skipping all other address details.