Yambio's 2026 population is now estimated at 260,425. In 1973, the population of Yambio was 6,675. Yambio has grown by 12,701 in the last year, which represents a 5.13% annual change. These population values and projections come from South Sudan cities and towns census 1973/1983 via CityPopulation attribution, South Sudan NBS city and town census 2008 via CityPopulation attribution and World Population Review Internal Projections .