Rio Bravo's 2026 population is now estimated at 22,961. In 1994, the population of Rio Bravo was 4,618. Rio Bravo has grown by 1,120 in the last year, which represents a 5.13% annual change. These population values and projections come from CityPopulation Guatemala cities and towns census series (1994, 2002) fallback access, INE Guatemala Censo 2018 A1.2 municipio urban population and World Population Review Internal Projections .