Kainantu's 2026 population is now estimated at 5,346. In 1980, the population of Kainantu was 3,800. Kainantu has grown by 50 in the last year, which represents a 0.94% annual change. These population values and projections come from Papua New Guinea city census series 1980-1990 via CityPopulation official attribution, Papua New Guinea city census 2011 via CityPopulation NSO attribution and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Port Moresby | 594,535 | 3.32% |
| Lae | 192,479 | 1.72% |
| Wewak | 59,807 | 3.1% |
| Kimbe | 44,110 | 4.46% |
| Madang | 41,627 | 0.98% |
| Mount Hagen | 32,547 | 0.6% |
| Goroka | 29,330 | 1.68% |
| Vanimo | 22,723 | 3.3% |
| Popondetta | 20,124 | 3.17% |
| Daru | 18,770 | 1.44% |
| Kundiawa | 16,138 | 2.69% |
| Kiunga | 16,097 | 2.58% |
| Lorengau | 15,608 | 3.82% |
| Alotau | 15,188 | 1.66% |
| Kavieng | 13,679 | 2.15% |
| Tabubil | 12,981 | 1.58% |
| Mendi | 12,618 | 1.57% |
| Buka | 11,466 | 5.13% |
| Kokopo | 11,338 | 3.59% |
| Kerowagi | 9,980 | 5.13% |
| Aitape | 9,599 | 2.93% |
| Tari | 7,113 | 5.13% |
| Kerema | 7,108 | 1.27% |
| Balimo | 6,938 | 3.09% |
| Kagamuga | 6,489 | 5.14% |
| Wabag | 6,448 | 1.64% |
| Rabaul | 6,308 | 1.86% |
| Finschafen | 6,150 | 5.13% |
| Minj | 5,652 | 5.11% |
| Bulolo | 5,382 | -1.82% |
| Kainantu | 5,346 | 0.94% |
| Bialla | 4,813 | 4% |
| Ramu Sugar | 4,504 | -0.62% |
| Kerevat | 3,866 | 5.14% |
| Arawa | 3,749 | 2.04% |
| Hagita Estate | 3,610 | 0.89% |
| Ialibu | 3,538 | 3.81% |
| Wapenamanda | 3,476 | 5.11% |
| Mosa | 3,400 | 1.77% |
| Banz | 3,061 | 3.52% |
| Chuave | 3,002 | 5.11% |
| Laiagam | 2,934 | 5.12% |
| Londolovit | 2,672 | 3.29% |
| Wau | 2,609 | -1.95% |
| Namatanai | 2,547 | 3.41% |
| Malalaua | 2,367 | 2.38% |
| Kwikila | 2,365 | 3.1% |
| Lakurumau Estate | 2,311 | 4.95% |
| Mamba | 2,306 | 1.41% |
| Kikori | 2,243 | -0.71% |
| Bereina | 2,220 | 2.4% |
| Maprik | 1,825 | 1.11% |
| Moreguina | 1,799 | 3.63% |
| Ambunti | 1,728 | 0.52% |
| Angoram | 1,656 | -0.84% |
| Kupiano | 1,506 | 2.1% |
| Baimuru | 1,428 | 0.07% |
| Wakwak | 1,294 | 1.57% |
| Wakunai | 1,181 | 5.07% |
| Ihu | 1,118 | 3.04% |
| Tufi Government Station | 1,082 | 5.15% |
| Kandrian | 910 | 0.66% |
| Paiam | 855 | 2.03% |
| Kokoda | 848 | 1.68% |
| Lombrum Navy Base | 837 | -1.76% |
| Pogera | 803 | -2.19% |
| Tapini | 791 | 1.93% |
| Goldie | 762 | -0.13% |
| Ukarumpa S.I.L. | 622 | 1.97% |
| Yonki | 621 | -2.05% |
| Bihute | 359 | -1.37% |
| Sogeri | 282 | -2.76% |
| Bogia | 260 | -4.06% |
| Nonga Base | 221 | -4.74% |