Murienua's 2026 population is now estimated at 794. In 2021, the population of Murienua was 794. These population values and projections come from Cook Islands CISO Census 2021 Table 1.05 resident population by usual residence and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Aitutaki | 1,776 | 0% |
| Kiikii-Tupapa-Maraerenga | 1,749 | 0% |
| Nikao-Panama | 1,487 | 0% |
| Titikaveka | 1,276 | 0% |
| Ruaau-Arerenga | 1,199 | 0% |
| Matavera | 1,018 | 0% |
| Avatiu-Ruatonga-Atupa | 974 | 0% |
| Avarua | 974 | 0% |
| Ngatangiia | 795 | 0% |
| Murienua | 794 | 0% |
| Akaoa-Betela | 668 | 0% |
| Takuvaine | 629 | 0% |
| Mangaia | 471 | 0% |
| Pukapuka | 456 | 0% |
| Atiu | 382 | 0% |
| Tutakimoa-Teotue | 274 | 0% |
| Mauke | 249 | 0% |
| Penrhyn | 230 | 0% |
| Manihiki | 207 | 0% |
| Mitiaro | 155 | 0% |
| Nassau | 92 | 0% |
| Rakahanga | 81 | 0% |
| Palmerston | 25 | 0% |