data mongolia 2023Mongolia is a country in Asia. The population in Mongolia was 3,481,145 in 2025. The nominal GDP per capita in Mongolia was $5,838.63 in 2025. The Gini index in Mongolia was 31.4 inIn Mongolia, the current population is 3,431,932 as of 2025 with a projected increase of 31% to 4,501,493 by 2050. Population growth rate. Mongolia, 2025.