Belfast's 2026 population is now estimated at 656,593. In 1950, the population of Belfast was 445,879. Belfast has grown by 4,611 in the last year, which represents a 0.71% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Belfast, which typically includes Belfast's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Johannesburg | 6,559,190 | 1.78% |
| Cape Town | 5,147,500 | 1.66% |
| Durban | 3,343,940 | 1.3% |
| Pretoria | 3,015,320 | 2.03% |
| Port Elizabeth | 1,349,290 | 1.41% |
| Vereeniging | 823,757 | 1.33% |
| Bloemfontein | 628,850 | 1.62% |
| Rustenburg | 621,905 | 2.3% |
| Pietermaritzburg | 568,925 | 1.44% |
| Witbank | 534,248 | 2.03% |
| Polokwane | 518,547 | 2.28% |
| East London | 295,644 | 1.02% |
| Newcastle | 291,484 | 1% |
| Uitenhage | 242,924 | 1.02% |
| Kimberley | 225,155 | 1.02% |
| Welkom | 211,014 | 1.01% |
| Paarl | 197,735 | 1.03% |
| Klerksdorp | 189,496 | 1.01% |
| Botshabelo | 181,712 | 1% |
| Middelburg | 163,809 | 1.06% |
| Middelburg | 163,809 | 1.06% |
| George | 157,397 | 1.03% |
| Carletonville | 149,065 | 0.99% |
| Potchefstroom | 148,804 | 1.02% |
| Mthatha | 137,589 | 1.03% |
| Sasolburg | 113,368 | 1.03% |
| Queenstown | 98,988 | 1.02% |
| Kroonstad | 97,780 | 1.01% |
| Worcester | 97,075 | 1.02% |
| Orkney | 91,854 | 1.01% |
| Thohoyandou | 89,427 | 1% |
| Standerton | 84,383 | 1.03% |
| Ermelo | 83,735 | 1.05% |
| Stellenbosch | 80,316 | 1.03% |
| Bethlehem | 76,015 | 1.01% |
| Mokopane | 75,516 | 1.04% |
| Heidelberg | 71,661 | 1.04% |
| Atlantis | 69,055 | 1.02% |
| Upington | 67,581 | 1.02% |
| Grahamstown | 67,264 | 1.01% |
| Virginia | 66,208 | 0.99% |
| Mossel Bay | 65,887 | 1.02% |
| Brits | 65,113 | 1.04% |
| Mahikeng | 64,359 | 1.02% |
| Stilfontein | 63,836 | 1% |
| Mpumalanga | 62,406 | 1% |
| Oudtshoorn | 61,508 | 1.01% |
| Bethal | 60,780 | 1.05% |
| Thaba Nchu | 60,696 | 0.99% |
| Nelspruit | 58,670 | 1.08% |
| Phuthaditjhaba | 56,251 | 1.01% |
| Delmas | 52,125 | 1.04% |
| Kokstad | 51,540 | 1.07% |
| Richards Bay | 50,533 | 1.03% |
| Knysna | 50,029 | 1.03% |
| Barberton | 48,505 | 1.04% |
| Ekangala | 48,492 | 1.03% |
| Parys | 48,169 | 1.01% |
| Vryheid | 47,365 | 1.03% |
| Hermanus | 46,856 | 1.05% |
| Vryburg | 46,639 | 1.03% |
| Bothaville | 46,029 | 0.99% |
| Lichtenburg | 45,449 | 1.05% |
| Mondlo | 44,981 | 1.02% |
| Butterworth | 44,308 | 1% |
| Modimolle | 41,988 | 1.02% |
| Lydenburg | 41,403 | 1.06% |
| Schweizer-Reneke | 41,227 | 1.02% |
| Fochville | 38,491 | 1.01% |
| Vredenburg | 38,382 | 1.04% |
| Port Shepstone | 37,089 | 1.04% |
| Siyabuswa | 36,882 | 1.01% |
| Cradock | 36,671 | 1.02% |
| Malmesbury | 35,897 | 1.05% |
| Graaff-Reinet | 35,672 | 1.01% |
| Aliwal North | 35,153 | 1.02% |
| Dundee | 34,924 | 1.02% |
| Bronkhorstspruit | 34,395 | 1.04% |
| Beaufort West | 34,085 | 1.01% |
| Wolmaransstad | 33,492 | 1.04% |
| Plettenberg Bay | 31,822 | 1.06% |
| Viljoenskroon | 31,468 | 1.02% |
| Grabouw | 31,291 | 1.04% |
| Nigel | 30,276 | 1.01% |
| Postmasburg | 30,089 | 1.04% |
| De Aar | 29,989 | 1.01% |
| Thabazimbi | 28,846 | 1.08% |
| Cullinan | 28,451 | 1.03% |
| Whittlesea | 28,248 | 0.99% |
| Saldanha | 28,142 | 1.03% |
| Bloemhof | 27,904 | 1.02% |
| Harrismith | 27,869 | 1.01% |
| Robertson | 27,714 | 1.03% |
| Empangeni | 27,606 | 1.08% |
| Heilbron | 27,407 | 1.01% |
| Howick | 27,087 | 1.05% |
| Wesselsbron | 26,808 | 1% |
| Margate | 26,786 | 1.05% |
| Ulundi | 26,538 | 1.01% |
| Balfour | 25,969 | 1.03% |
| Port Alfred | 25,858 | 1.02% |
| Ladybrand | 25,816 | 1.02% |
| Mpophomeni | 25,732 | 1.02% |
| Fort Beaufort | 25,668 | 1.01% |
| Senekal | 25,543 | 1.01% |
| Louis Trichardt | 25,359 | 1.05% |
| Stutterheim | 24,672 | 1.01% |
| Volksrust | 24,281 | 1.02% |
| Ceres | 23,873 | 1.01% |
| Theunissen | 23,513 | 1% |
| Jan Kempdorp | 23,003 | 1.04% |
| Hendrina | 22,786 | 1.05% |
| Warrenton | 22,588 | 1.06% |
| Christiana | 20,882 | 1.02% |
| Reitz | 20,183 | 1.01% |
| Barkly West | 20,105 | 1.04% |
| Koster | 19,498 | 1.06% |
| Deneysville | 19,478 | 1.02% |
| Allanridge | 19,337 | 1% |
| Greytown | 19,313 | 1.02% |
| Somerset East | 18,824 | 1.01% |
| Vredendal | 18,170 | 1.02% |
| Vrede | 17,689 | 1% |
| Clocolan | 17,602 | 1.01% |
| Glencoe | 17,548 | 1.02% |
| Swellendam | 17,522 | 1.03% |
| Villiers | 17,315 | 0.99% |
| Colesberg | 16,870 | 1.03% |
| Riversdale | 16,177 | 1.02% |
| Hoopstad | 16,033 | 1.03% |
| Burgersdorp | 15,991 | 1.02% |
| Zeerust | 15,987 | 1.02% |
| Zastron | 15,607 | 1.04% |
| Bredasdorp | 15,524 | 1.02% |
| Marquard | 15,502 | 1.02% |
| Kriel | 15,237 | 1.03% |
| Montagu | 15,176 | 1.04% |
| Ritchie | 14,850 | 1.03% |
| Elliot | 14,376 | 1% |
| Phalaborwa | 13,108 | 1% |