Singapore uses a six-digit postal code system administered by Singapore Post (SingPost). Unlike many countries where postal codes designate broad geographic regions, Singapore's codes are highly granular, with each code typically corresponding to a single building, block, or small cluster of addresses, making the postal code alone often sufficient to identify a specific location.
The six-digit format was introduced in 1995, replacing an earlier four-digit system, to accommodate the city-state's dense development and improve mail-sorting accuracy. The first two digits generally indicate the postal sector, which loosely corresponds to a district area, while the remaining digits narrow down to the specific delivery point.
The database currently contains 121,135 postal codes for Singapore.
| Region | Postal Codes |
|---|---|
| Central Region | 47,514 |
| North-East Region | 28,309 |
| East Region | 22,177 |
| West Region | 14,986 |
| North Region | 8,149 |