Rayong's 2023 population is now estimated at 559,534. In 1950, the population of Rayong was 6,388. Rayong has grown by 7,109 in the last year, which represents a 1.29% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Rayong, which typically includes Rayong's population in addition to adjacent suburban areas.