| City | Boxcode | StrCode | Area |
| UBOMBO | 3970 | | EMPANGENI |
| UGIE | 5470 | 5470 | UGIE |
| UIF | 52 | | PRETORIA |
| UITENHAGE | 6230 | 6229 | UITENHAGE |
| UITKYK | 2843 | | MADIKWE |
| UITKYK | | 6400 | KAREEDOUW |
| UITSIG | | 9499 | KROONSTAD |
| UITSIG | | 7493 | RAVENSMEAD |
| UITSIG | | 7655 | WELLINGTON |
| UITSIG | | 9301 | BLOEMFONTEIN |
| UITSIG | | 8423 | MANCORP MINE |
| UITSIG | | 8770 | PETRUSVILLE |
| UITSIG | | 7230 | CALEDON |
| UITVAL | 2921 | | WASBANK |
| UITVAL | 3320 | | |
| UITZICHT | | 7550 | DURBANVILLE |
| UITZICHT | | 7570 | KRAAIFONTEIN |
| ULCO | 8390 | 8390 | - |
| ULCO BLOCK | | 8377 | |
| ULCO BLOK | | 8377 | |
| ULUNDI | 3838 | 3838 | MELMOTH |
| ULUNDI D | 3838 | | ULUNDI |
| ULWAZI | 3981 | | - |
| UMASIZAKHE | | 6280 | GRAAFF-REINET |
| UMBEDULA | 3609 | 3609 | PINETOWN |
| UMBHEDULA | 3609 | 3609 | PINETOWN |
| UMBILO | 4075 | 4001 | DURBAN |
| UMBOGINTWINI | 4120 | 4126 | AMANZIMTOTI |
| UMBUMBULU | 4105 | | - |
| UMDLOTI BEACH | 4350 | 4319 | UMHLANGA ROCKS |
| UMDLOTI HEIGHTS | 4340 | 4339 | VERULAM |
| UMDONI | 4193 | | |
| UMDONI VILLAGE | 4184 | | PENNINGTON |
| UMFUYANENI SECTION | 1635 | 1632 | TEMBISA |
| UMFUYANENI SEKSIE | 1635 | 1632 | TEMBISA |
| UMGABABA | 4126 | 4126 | AMANZIMTOTI |
| UMGENI | | 4001 | DURBAN |
| UMGENI EST | | 3290 | HOWICK |
| UMGENI LGD | | 3290 | HOWICK |
| UMGENI HEIGHTS | | 4051 | DURBAN NORTH |
| UMGENIHOOGTE | | 4051 | DURBAN NORTH |
| UMGENI PARK | 4098 | 4051 | DURBAN NORTH |
| UMHLALI | 4390 | 4390 | TONGAAT |
| UMHLANGA | 4320 | 4319 | UMHLANGA |
| UMHLANGA MANORS | 4021 | 4319 | UMHLANGA ROCKS |
| UMHLANGA RIDGE | | 4319 | UMHLANGA ROCKS |
| UMHLANGARIF | | 4319 | UMHLANGA ROCKS |
| UMHLANGA ROCKS | 4320 | 4319 | UMHLANGA |
| UMHLATHUZE | 3880 | 3880 | EMPANGENI |
| UMHLATHUZE EXT 3 | 3880 | 3880 | EMPANGENI |
| UMHLATHUZE UIT 3 | 3880 | 3880 | EMPANGENI |
| UMHLATUZANA | 4054 | 4092 | CHATSWORTH |
| UMKHAMBE GARDENS | | 3370 | LADYSMITH |
| UMKHAMBE TUINE | | 3370 | LADYSMITH |
| UMKHUZA | 4342 | | NDWEDWE |
| UMKOMAAS | 4170 | 4170 | |
| UMKOMAAS VALLEY | 3742 | | UMKOMAAS |
| UMKUMBAAN | 4091 | 4091 | CATO MANOR |
| UMLAAS ROAD | 3730 | | HAMMARSDALE |
| UMLAASWEG | 3730 | | HAMMARSDALE |
| UMLAZI | 4031 | 4066 | UMLAZI |
| UMLAZI 5 EXT 2 | 4031 | | UMLAZI |
| UMLAZI 5 UIT 2 | 4031 | | UMLAZI |
| UMLAZI A1 | 4089 | | UMLAZI |
| UMLAZI A2 | 4089 | | UMLAZI |
| UMLAZI AA | 4089 | | UMLAZI |
| UMLAZI C | 4089 | | UMLAZI |
| UMLAZI C1 | 4089 | | UMLAZI |
| UMLAZI C2 | 4089 | | UMLAZI |
| UMLAZI C3 | 4031 | | UMLAZI |
| UMLAZI CC | 4031 | | UMLAZI |
| UMLAZI D3 | 4031 | | UMLAZI |
| UMLAZI DX1 | 4144 | | UMLAZI |
| UMLAZI E4 | 4089 | | UMLAZI |
| UMLAZI E7 | 4089 | | UMLAZI |
| UMLAZI E9 | 4089 | | UMLAZI |
| UMLAZI F1 | 4089 | | UMLAZI |
| UMLAZI F11 | 4031 | | UMLAZI |
| UMLAZI F2 | 4089 | | UMLAZI |
| UMLAZI F3 | 4031 | | UMLAZI |
| UMLAZI F6 | 4031 | | UMLAZI |
| UMLAZI F9 | 4031 | | UMLAZI |
| UMLAZI FX6 | 4031 | | UMLAZI |
| UMLAZI GLEBE | 4089 | | UMLAZI |
| UMLAZI GX4 | 4031 | | UMLAZI |
| UMLAZI GX5 | 4148 | | UMLAZI |
| UMLAZI GX8-9 | 4031 | | UMLAZI |
| UMLAZI H1 | 4148 | | UMLAZI |
| UMLAZI HX1 | 4148 | | UMLAZI |
| UMLAZI HX14 | 4031 | | UMLAZI |
| UMLAZI HX17 | 4031 | | UMLAZI |
| UMLAZI HX4 | 4031 | | UMLAZI |
| UMLAZI N | 4031 | 4066 | UMLAZI |
| UMLAZI NEW VILLAGE | 4031 | | UMLAZI |
| UMLAZI PHASE 5 | | 4066 | UMLAZI |
| UMLAZI FASE 5 | | 4066 | UMLAZI |
| UMLAZI PHASE 6 | | 4066 | UMLAZI |
| UMLAZI FASE 6 | | 4066 | UMLAZI |
| UMLAZI PHASE 8 | | 4031 | UMLAZI |
| UMLAZI FASE 8 | | 4031 | UMLAZI |
| UMLAZI Q | 4089 | 4066 | UMLAZI |
| UMLAZI S1 | 4089 | | UMLAZI |
| UMLAZI SECTION BB | | 4066 | UMLAZI |
| UMLAZI SEKSIE BB | | 4066 | UMLAZI |
| UMLAZI SECTION C | | 4066 | UMLAZI |
| UMLAZI SEKSIE C | | 4066 | UMLAZI |
| UMLAZI SECTION F | 4031 | 4066 | UMLAZI |
| UMLAZI SEKSIE F | 4031 | 4066 | UMLAZI |
| UMLAZI SECTION G | | 4066 | UMLAZI |
| UMLAZI SEKSIE G | | 4066 | UMLAZI |
| UMLAZI SECTION J | | 4066 | UMLAZI |
| UMLAZI SEKSIE J | | 4066 | UMLAZI |
| UMLAZI SECTION K | | 4066 | UMLAZI |
| UMLAZI SEKSIE K | | 4066 | UMLAZI |
| UMLAZI SECTION L | | 4066 | UMLAZI |
| UMLAZI SEKSIE L | | 4066 | UMLAZI |
| UMLAZI SECTION P | | 4066 | UMLAZI |
| UMLAZI SEKSIE P | | 4066 | UMLAZI |
| UMLAZI SECTION U | | 4066 | UMLAZI |
| UMLAZI SEKSIE U | | 4066 | UMLAZI |
| UMLAZI SECTION V | 4031 | 4066 | UMLAZI |
| UMLAZI SEKSIE V | 4031 | 4066 | UMLAZI |
| UMLAZI SECTION W | | 4066 | UMLAZI |
| UMLAZI SEKSIE W | | 4066 | UMLAZI |
| UMLAZI SECTION Y | | 4066 | UMLAZI |
| UMLAZI SEKSIE Y | | 4066 | UMLAZI |
| UMLAZI SECTION Z | | 4066 | UMLAZI |
| UMLAZI SEKSIE Z | | 4066 | UMLAZI |
| UMLAZI T | 4089 | | UMLAZI |
| UMLAZI V4 | 4089 | | UMLAZI |
| UMLAZI V6 | 4089 | | UMLAZI |
| UMLAZI WHITE CITY | 4031 | | UMLAZI |
| UMNGAZANA | 5120 | | PORT ST JOHNS |
| UMNGAZI MOUTH | 5120 | | PORT ST JOHNS |
| UMNONJANENI | | 1632 | TEMBISA |
| UMNONJANENI EXT 5 | | 1632 | TEMBISA |
| UMNONJANENI UIT 5 | | 1632 | TEMBISA |
| UMSUNDUZE | 4342 | | NDWEDWE |
| UMSUNDUZI | 3680 | | CATO RIDGE |
| UMTATA | 5099 | 5100 | MTHATHA |
| UMTATA MOUTH | 5100 | | MTHATHA |
| UMTATA NORTH | 5127 | | MTHATHA |
| UMTATA-NOORD | 5127 | | MTHATHA |
| UMTENTWENI | 4235 | 4235 | PORT SHEPSTONE |
| UMTENTWENI EXT 11 | 4235 | | PORT SHEPSTONE |
| UMTENTWENI UIT 11 | 4235 | | PORT SHEPSTONE |
| UMTHAMBEKA | | 1632 | TEMBISA |
| UMTHAMBEKA EXT 1 | | 1632 | TEMBISA |
| UMTHAMBEKA UIT 1 | | 1632 | TEMBISA |
| UMTHAMBEKA EXT 11 | | 1632 | TEMBISA |
| UMTHAMBEKA UIT 11 | | 1632 | TEMBISA |
| UMVOTI SLOPES | 3259 | | DALTON |
| UMVOTIKLOOF | 3262 | | GREYTOWN |
| UMVUZANE | | 3610 | |
| UMZIMHLE | 2627 | 2619 | ORKNEY |
| UMZIMKHULU | 3297 | | - |
| UMZIMKULU | 3297 | | - |
| UMZIMKULU MILL | 4240 | | PORT SHEPSTONE |
| UMZINTO | 4200 | 4200 | UMZINTO |
| UMZINTO STA | 4201 | | UMZINTO |
| UMZINYATHI | | 4309 | INANDA |
| UMZUMBE | 4225 | 4225 | |
| UNATHI | | 7750 | GUGULETU |
| UNDERBERG | 3257 | | - |
| UNIBELL | 7539 | | BELLVILLE |
| UNIEDAL | 7612 | 7600 | STELLENBOSCH |
| UNIEPARK | | 7600 | STELLENBOSCH |
| UNIFIED | | 1709 | FLORIDA |
| UNIFIED EXT 4 | | 1709 | FLORIDA |
| UNIFIED UIT 4 | | 1709 | FLORIDA |
| UNIFOUND | | 5319 | QUEENSTOWN |
| UNIGRAY | | 2197 | JOHANNESBURG |
| UNION | | 1401 | GERMISTON |
| UNION EXT 1 | | 1401 | GERMISTON |
| UNION UIT 1 | | 1401 | GERMISTON |
| UNION EXT 10 | | 1401 | GERMISTON |
| UNION UIT 10 | | 1401 | GERMISTON |
| UNION EXT 11 | | 1401 | GERMISTON |
| UNION UIT 11 | | 1401 | GERMISTON |
| UNION EXT 12 | | 1401 | GERMISTON |
| UNION UIT 12 | | 1401 | GERMISTON |
| UNION EXT 13 | | 1401 | GERMISTON |
| UNION UIT 13 | | 1401 | GERMISTON |
| UNION EXT 14 | | 1401 | GERMISTON |
| UNION UIT 14 | | 1401 | GERMISTON |
| UNION EXT 3 | | 1401 | GERMISTON |
| UNION UIT 3 | | 1401 | GERMISTON |
| UNION EXT 4 | | 1401 | GERMISTON |
| UNION UIT 4 | | 1401 | GERMISTON |
| UNION EXT 52 | 1400 | 1401 | GERMISTON |
| UNION UIT 52 | 1400 | 1401 | GERMISTON |
| UNION EXT 6 | | 1401 | GERMISTON |
| UNION UIT 6 | | 1401 | GERMISTON |
| UNION EXT 7 | | 1401 | GERMISTON |
| UNION UIT 7 | | 1401 | GERMISTON |
| UNION SETTLEMENTS | | 1401 | GERMISTON |
| UNIONDALE | 6460 | 6460 | UNIONDALE |
| UNIQUE HOMES | | 9323 | KAGISANONG |
| UNISA | 3 | | PRETORIA |
| UNISARAND | 148 | | PRETORIA |
| UNISEL | 9477 | | WELKOM |
| UNIT ONE | 9783 | 9783 | THABA NCHU |
| UNITAS PARK | 1942 | 1943 | VEREENIGING |
| UNITAS PARK EXT 1 | | 1943 | VEREENIGING |
| UNITAS PARK UIT 1 | | 1943 | VEREENIGING |
| UNITAS PARK EXT 3 | 1942 | 1939 | VEREENIGING |
| UNITAS PARK UIT 3 | 1942 | 1939 | VEREENIGING |
| UNITRA | 5117 | | MTHATHA |
| UNIVERSITAS | 9321 | 9301 | BLOEMFONTEIN |
| UNIVERSITAS RIDGE | 9321 | 9301 | BLOEMFONTEIN |
| UNIVERSITASRIF | 9321 | 9301 | BLOEMFONTEIN |
| UNIVERSITAS WEST | | 9301 | BLOEMFONTEIN |
| UNIVERSITAS-WES | | 9301 | BLOEMFONTEIN |
| UNIVERSITEITSOORD | | 7600 | STELLENBOSCH |
| UNIVERSITY EST | | 7925 | WOODSTOCK |
| UNIVERSITEIT LGD | | 7925 | WOODSTOCK |
| UNIVERSITY OF BLOEMFONTEIN | | 9301 | BLOEMFONTEIN |
| UNIVERSITEIT VAN BLOEMFONTEIN | | 9301 | BLOEMFONTEIN |
| UNIVERSITY OF KWAZULU NATAL | 4041 | | DURBAN |
| UNIVERSITEIT VAN KWAZULU NATAL | 4041 | | DURBAN |
| UNIVERSITY OF POTCHEFSTROOM | | 2531 | POTCHEFSTROOM |
| UNIVERSITEIT VAN POTCHEFSTROOM | | 2531 | POTCHEFSTROOM |
| UPINGTON | 8800 | 8801 | UPINGTON |
| UPINGTON EXT 12 | | 8801 | UPINGTON |
| UPINGTON UIT 12 | | 8801 | UPINGTON |
| UPINGTON EXT 19 | | 8801 | UPINGTON |
| UPINGTON UIT 19 | | 8801 | UPINGTON |
| UPINGTON EXT 40 | | 8801 | UPINGTON |
| UPINGTON UIT 40 | | 8801 | UPINGTON |
| UPINGTON EXT 41 | | 8801 | UPINGTON |
| UPINGTON UIT 41 | | 8801 | UPINGTON |
| UPINGTON EXT 42 | | 8801 | UPINGTON |
| UPINGTON UIT 42 | | 8801 | UPINGTON |
| UPPER AGNES | 5435 | | DORDRECHT |
| UPPER CLAREMONT | | 7708 | CLAREMONT |
| UPPER FERNCLIFFE | | 3201 | PIETERMARITZBURG |
| UPPER NCUNCUZO | 5380 | | COFIMVABA |
| UPPER NSELENI | 3884 | | EMPANGENI |
| UPPER TONGAAT | 4402 | | TONGAAT |
| UPPER TSOJANA | 5380 | | COFIMVABA |
| UPPER TSOJANA RPA | 5379 | | EASTERN CAPE |
| UPPER WOODSTOCK | | 7925 | CAPE TOWN |
| UPPER WYNBERG | | 7800 | PLUMSTEAD |
| URANIAVILLE | | 2571 | KLERKSDORP |
| URBANVILLE | | 6529 | GEORGE |
| USUTU | 624 | | POTGIETERSRUS |
| UTHOKOZANA | 1346 | 1346 | NELSPRUIT |
| UTHOKOZANE | 1346 | 1346 | NELSPRUIT |
| UTILITY | | 8301 | KIMBERLEY |
| UTJANE | 743 | | MASHASHANE |
| UTLWANANG | 2784 | | MAHIKENG |
| UTLWANENG | 2680 | 2680 | CHRISTIANA |
| UTRECHT | 2980 | 2980 | |
| UTSANE | 770 | | POLOKWANE |
| UVONGO | 4270 | 4270 | - |
| UYAYA | 3269 | | KRANSKOP |
