Guam Population Pyramid 2031
Guam in 2031
United Nations projections (medium variant) put the population of Guam at 175,677 in 2031. Compared with 2021, when the projection stands at 163,730, that represents growth of 7.3% over ten years.
The median age is projected at 33.5 years, with 40.4 children under 15 and 26.5 people aged 65 or over for every 100 people of working age (15–64). The pyramid is stationary: cohort sizes are roughly even through the younger ages, reflecting fertility close to replacement level and slow population change.
Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.
The fertility rate of Guam was 2.78 births per woman in 2023, above the 2.1 needed to replace each generation.
Source: World Bank World Development Indicators, latest available year.
A child born there in 2023 could expect to live 77.2 years on average (81.4 years for girls, 73.4 for boys).
Source: World Bank World Development Indicators, latest available year.
77,104 immigrants live in Guam, 46.0% of the population.
| Philippines | 32,415 |
| United States of America | 20,469 |
| Micronesia (Fed. States of) | 11,767 |
| Puerto Rico | 4,367 |
| Republic of Korea | 2,996 |
196 people born in Guam live in other countries.
| Australia | 141 |
| Micronesia (Fed. States of) | 38 |
| Mexico | 10 |
| Costa Rica | 7 |
Source: United Nations International Migrant Stock 2024.
| Country | Population | Median age | Relative size |
|---|---|---|---|
| Guam | 175,677 | 33.5 | |
| Kiribati | 148,024 | 24.5 | |
| Micronesia (Fed. States of) | 116,903 | 25.5 |





