Alo's 2026 population is now estimated at 1,831. In 1990, the population of Alo was 2,860. Alo experienced a decrease of -15 residents over the past year, marking an annual decline of -0.81%. These population values and projections come from Wallis and Futuna district census series 1990-2023 via CityPopulation official attribution and World Population Review Internal Projections .