Nuevo San Carlos's 2026 population is now estimated at 31,375. In 1994, the population of Nuevo San Carlos was 733. Nuevo San Carlos has grown by 1,251 in the last year, which represents a 4.15% 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 .