Onchan
- Country:
- Isle of Man
- Continent:
- Europe
Onchan's 2026 population is now estimated at 8,951. In 1981, the population of Onchan was 7,478. Onchan experienced a decrease of -17 residents over the past year, marking an annual decline of -0.19%. These population values and projections come from Isle of Man towns and villages via CityPopulation and World Population Review Internal Projections .