As a box code, 2148 is used for 13 post office box locations.
PO Boxes using 2148
| Suburb | Town | Province |
|---|---|---|
| Barlow Park | Johannesburg | Gauteng |
| Cramerville | Johannesburg | Gauteng |
| Eastgate Ext | Johannesburg | Gauteng |
| Eastgate Ext 11 | Johannesburg | Gauteng |
| Eastgate Ext 12 | Johannesburg | Gauteng |
| Eastgate Ext 13 | Johannesburg | Gauteng |
| Eastgate Ext 18 | Johannesburg | Gauteng |
| Eastgate Ext 3 | Johannesburg | Gauteng |
| Eastgate Ext 4 | Johannesburg | Gauteng |
| Eastgate Ext 6 | Johannesburg | Gauteng |
| Eastgate Ext 8 | Johannesburg | Gauteng |
| Eastgate Ext 9 | Johannesburg | Gauteng |
| Wesco Park | Johannesburg | Gauteng |