As a box code, 1803 is used for 4 post office box locations.
PO Boxes using 1803
| Suburb | Town | Province |
|---|---|---|
| Pennyville | Johannesburg | Gauteng |
| Mzimhlophe | Meadowlands | Gauteng |
| Noordgesig Ext 1 | Orlando | Gauteng |
| Orlando | Soweto | Gauteng |
Postal code 1803
Soweto, Gauteng
1803 is a PO Box code in Gauteng, South Africa, mainly serving Soweto.