Grand Bois's 2026 population is now estimated at 4,976. In 2000, the population of Grand Bois was 7,434. Grand Bois experienced a decrease of -6 residents over the past year, marking an annual decline of -0.12%. These population values and projections come from Estimated resident population by district, MCA and VCA (Mauritius official open data) and World Population Review Internal Projections .