H
| Town name | Postal code |
| Hackney | 6351 |
| Halfway House | 1684 |
| Halfway House | 1685 |
| Halfway House | 1686 |
| Halfway House | 1687 |
| Halfway House | 1689 |
| Halfway House | 1692 |
| Halfway House | 1693 |
| Hambanathi Heights | 4399 |
| Hambanathi Heights | 4400 |
| Hammanskraal | 0400 |
| Hammanskraal | 0402 |
| Hammanskraal | 0404 |
| Hammanskraal | 0407 |
| Hammanskraal | 0413 |
| Hammanskraal | 0414 |
| Hammanskraal | 0417 |
| Hammanskraal | 0426 |
| Hammanskraal | 0427 |
| Hammanskraal | 0429 |
| Hammanskraal | 0431 |
| Hammanskraal | 0432 |
| Hammanskraal | 0434 |
| Hammanskraal | 0435 |
| Hammarsdale | 3670 |
| Hammarsdale | 3680 |
| Hammarsdale | 3690 |
| Hammarsdale | 3699 |
| Hammarsdale | 3700 |
| Hammarsdale | 3701 |
| Hammarsdale | 3705 |
| Hammarsdale | 3710 |
| Hammarsdale | 3720 |
| Hammarsdale | 3730 |
| Hankey | 6350 |
| Hanover | 7005 |
| Harding | 4643 |
| Harding | 4680 |
| Harding | 4681 |
| Harding | 4683 |
| Harding | 4684 |
| Harding | 4687 |
| Harding | 4688 |
| Harding | 4689 |
| Harrismith | 3372 |
| Harrismith | 9880 |
| Harrismith | 9882 |
| Harrismith | 9883 |
| Harrismith | 9885 |
| Hartbeesfontein | 2600 |
| Hartbeespoort | 0216 |
| Hartenbos | 6520 |
| Hartswater | 8570 |
| Hatfield | 0083 |
| Hazyview | 1240 |
| Hazyview | 1246 |
| Hazyview | 1253 |
| Heathfield | 7945 |
| Heidelberg | 1439 |
| Heidelberg | 1440 |
| Heidelberg | 1441 |
| Heidelberg | 1442 |
| Heidelberg | 1443 |
| Heidelberg | 1444 |
| Heidelberg Wc | 6665 |
| Heidelberg Wc | 6666 |
| Heidelberg Wc | 6667 |
| Heilbron | 9650 |
| Hendrina | 1098 |
| Hercules | 0068 |
| Hercules | 0082 |
| Hermanus | 7200 |
| Hermanus | 7201 |
| Hermanus | 7202 |
| Hermanus | 7210 |
| Herschel | 9756 |
| Hertzogville | 9482 |
| Hibberdene | 4200 |
| Hibberdene | 4220 |
| Hibberdene | 4221 |
| Highflats | 3305 |
| Highflats | 3306 |
| Highveld | 0157 |
| Highveld | 0169 |
| Hillcrest | 3610 |
| Hillcrest | 3624 |
| Hillcrest | 3626 |
| Hillcrest | 3650 |
| Hillcrest | 3660 |
| Hlabisa | 3937 |
| Hlobane | 3145 |
| Hluhluwe | 3950 |
| Hluhluwe | 3960 |
| Hluvukani | 1362 |
| Hluvukani | 1363 |
| Hluvukani | 1364 |
| Hobhouse | 9740 |
| Hoedspruit | 1371 |
| Hoedspruit | 1382 |
| Hoedspruit | 1384 |
| Hofmeyr | 5930 |
| Hopefield | 7355 |
| Hopetown | 8750 |
| Hopetown | 8751 |
| Hopetown | 8760 |
| Hotazel | 8467 |
| Hout Bay | 7806 |
| Houtbaai | 7806 |
| Howick | 3224 |
| Howick | 3228 |
| Howick | 3244 |
| Howick | 3246 |
| Howick | 3247 |
| Howick | 3248 |
| Howick | 3255 |
| Howick | 3260 |
| Howick | 3265 |
| Howick | 3267 |
| Howick | 3270 |
| Howick | 3275 |
| Howick | 3290 |
| Howick | 3291 |
| Howick | 3299 |
| Howick | 3302 |
| Howick | 3303 |
| Huguenot | 7627 |
| Huguenot | 7646 |
| Humansdorp | 6375 |
| Humansdorp | 6300 |
| Humansdorp | 6302 |
| Humansdorp | 6303 |
| Humansdorp | 6304 |
| Humansdorp | 6306 |
| Humansdorp | 6307 |
| Humansdorp | 6310 |
| Humansdorp | 6311 |
| Humansdorp | 6313 |
| Hunter’S Retreat | 6017 |
| Hurlingham View | 2070 |
| Hurlingham View | 2196 |
