Rennell and Bellona's 2026 population is now estimated at 4,948. In 2010, the population of Rennell and Bellona was 3,274. Rennell and Bellona has grown by 126 in the last year, which represents a 2.61% annual change. These population values and projections come from SINSO province workbook populations 2010-2025 and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Guadalcanal | 190,274 | 3.41% |
| Malaita | 168,201 | 0.77% |
| Western | 108,743 | 1.61% |
| Honiara | 101,471 | 1.94% |
| Makira-Ulawa | 62,107 | 2.01% |
| Choiseul | 42,075 | 2.3% |
| Isabel | 39,631 | 1.97% |
| Central | 35,267 | 1.32% |
| Temotu | 26,668 | 0.93% |
| Rennell and Bellona | 4,948 | 2.61% |