As a box code, 1200 is used for 32 post office box locations.
Suburbs using 1200 as street code
| Suburb | Town | Province |
|---|---|---|
| Drum Rock Ext 3 | Mbombela (Nelspruit) | Mpumalanga |
| Kamagugu | Mbombela (Nelspruit) | Mpumalanga |
| Sonheuwel Ext 3 | Mbombela (Nelspruit) | Mpumalanga |
| Stonehenge Ext 1 | Mbombela (Nelspruit) | Mpumalanga |
| Stonehenge Ext 6 | Mbombela (Nelspruit) | Mpumalanga |
| West Acres Ext 32 | Mbombela (Nelspruit) | Mpumalanga |
| West Acres Ext 47 | Mbombela (Nelspruit) | Mpumalanga |
| West Acres Ext 50 | Mbombela (Nelspruit) | Mpumalanga |