As a box code, 1804 is used for 1 post office box location.
Suburbs using 1804 as street code
| Suburb | Town | Province |
|---|---|---|
| Diepkloof Ext 6 | Diepkloof | Gauteng |
| Diepkloof Hostel | Diepkloof | Gauteng |
| Pennyville | Johannesburg | Gauteng |
| Industrial Park | Orlando | Gauteng |
| Khotso | Orlando | Gauteng |
| Killarney | Orlando | Gauteng |
| Motsoaledi | Orlando | Gauteng |
| Motswaledi Camp | Orlando | Gauteng |
| Noordgesig | Orlando | Gauteng |
| Noordgesig Ext 1 | Orlando | Gauteng |
| Orlando East | Orlando | Gauteng |
| Orlando East Ext 1 | Orlando | Gauteng |
| Orlando East Ext 2 | Orlando | Gauteng |
| Orlando East Ext 3 | Orlando | Gauteng |
| Orlando East Ext 4 | Orlando | Gauteng |
| Orlando West | Orlando | Gauteng |
| Orlando West Ext | Orlando | Gauteng |
| Orlando West Ext 1 | Orlando | Gauteng |
| Orlando West Ext 2 | Orlando | Gauteng |
| Orlando West Ext 3 | Orlando | Gauteng |
| Orlando West Ext 4 | Orlando | Gauteng |
| Orlando West Gardens | Orlando | Gauteng |
| Orlando Womens Hostel | Orlando | Gauteng |
| Phirima | Orlando | Gauteng |
| Power Park | Orlando | Gauteng |
| Westcliffe | Orlando | Gauteng |
| Westcliffe Ext | Orlando | Gauteng |
| Orlando | Soweto | Gauteng |
PO Boxes using 1804
| Suburb | Town | Province |
|---|---|---|
| Diepkloof Ext Zone 4 | Diepkloof | Gauteng |