D
| Town name | Postal code |
| Dalpark | 1541 |
| Dalpark | 1552 |
| Dalton | 3242 |
| Dalton | 3259 |
| Dalton | 3230 |
| Dalton | 3236 |
| Dalton | 3238 |
| Danielskuil | 8405 |
| Dannhause | 3080 |
| Dannhauser | 3080 |
| Darling | 7345 |
| Darling | 7351 |
| Darnall | 4480 |
| Dassenberg | 7352 |
| Dassenberg | 7347 |
| Dassenberg | 7349 |
| Daveyton | 1519 |
| Daveyton | 1520 |
| Daveyton | 1521 |
| De Aar | 7000 |
| De Aar | 8780 |
| De Deur | 1884 |
| Dealesville | 9348 |
| Delareyville | 2718 |
| Delareyville | 2747 |
| Delareyville | 2748 |
| Delareyville | 2771 |
| Delareyville | 2772 |
| Delareyville | 2776 |
| Delft | 7100 |
| Delmas | 2210 |
| Delmas | 2211 |
| Delmas | 2213 |
| Delmore | 1401 |
| Delmore | 1404 |
| Delportshoop | 8377 |
| Dendron | 0786 |
| Deneysville | 1932 |
| Denneboom | 0160 |
| Derdepoortpark | 0035 |
| Desainagar | 4399 |
| Desainagar | 4405 |
| Despatch | 6220 |
| Devon | 2260 |
| Dewetsdorp | 9940 |
| Dibasabophelo | 0457 |
| Diep River | 7800 |
| Diep River | 7945 |
| Diepkloof | 1804 |
| Diepkloof | 1862 |
| Dikgakeng | 9873 |
| Dikgale | 0721 |
| Dinokana | 2868 |
| Dobsonville | 1863 |
| Dobsonville | 1865 |
| Dobsonville | 1874 |
| Dobsonville | 1875 |
| Dobsonville | 1723 |
| Donnybrook | 3241 |
| Donnybrook | 3237 |
| Doonside | 4126 |
| Doornpoort | 0186 |
| Doornpoort | 0017 |
| Dordrecht | 5420 |
| Dordrecht | 5435 |
| Dordrecht | 5436 |
| Dormerton | 4138 |
| Dormerton | 4091 |
| Douglas | 8730 |
| Douglas | 8735 |
| Driekop | 1128 |
| Driekop | 1131 |
| Dube | 1801 |
| Duduza | 1496 |
| Duduza | 1494 |
| Duiwelskloof | 0815 |
| Dundee | 3000 |
| Dundee | 3003 |
| Dundee | 3004 |
| Dundee | 3006 |
| Dundee | 3016 |
| Dundee | 3017 |
| Dundee | 3081 |
| Dundonald | 2336 |
| Dunnottar | 1496 |
| Durban | 4091 |
| Durban | 4092 |
| Durban | 4093 |
| Durban | 4094 |
| Durban | 4022 |
| Durban | 4023 |
| Durban | 4024 |
| Durban | 4025 |
| Durban | 4026 |
| Durban | 4027 |
| Durban | 4028 |
| Durban | 4029 |
| Durban | 4034 |
| Durban | 4035 |
| Durban | 4036 |
| Durban | 4037 |
| Durban | 4038 |
| Durban | 4162 |
| Durban | 4309 |
| Durban | 4310 |
| Durban | 4359 |
| Durban | 4360 |
| Durban | 4362 |
| Durban | 4051 |
| Durban | 4101 |
| Durban | 4104 |
| Durban | 4137 |
| Durban | 3611 |
| Durban | 3629 |
| Durban | 3630 |
| Durban | 4000 |
| Durban | 4001 |
| Durban | 4004 |
| Durban | 4005 |
| Durban | 4006 |
| Durban | 4007 |
| Durban | 4008 |
| Durban | 4011 |
| Durban | 4013 |
| Durban | 4014 |
| Durban | 4015 |
| Durban | 4016 |
| Durban | 4017 |
| Durban | 4018 |
| Durban | 4052 |
| Durban | 4053 |
| Durban | 4056 |
| Durban | 4057 |
| Durban | 4058 |
| Durban | 4059 |
| Durban | 4060 |
| Durban | 4061 |
| Durban | 4062 |
| Durban | 4063 |
| Durban | 4064 |
| Durban | 4065 |
| Durban | 4067 |
| Durban | 4068 |
| Durban | 4069 |
| Durban | 4070 |
| Durban | 4071 |
| Durban | 4074 |
| Durban | 4075 |
| Durban | 4078 |
| Durban | 4080 |
| Durban | 4083 |
| Durban | 4085 |
| Durban | 4090 |
| Durban North | 4019 |
| Durban North | 4051 |
| Durban North | 4098 |
| Durban-Noord | 4051 |
| Durbanville | 7550 |
| Dwars River | 0812 |
| Dzanani | 0955 |
