Guam Population Pyramid 2018
Guam in 2018
As of 2018, Guam counted 162,679 inhabitants. Over the previous ten years the population declined by 1.8%, down from 165,693 in 2008.
The median age was 31.5 years, and for every 100 people of working age (15–64) there were 40.0 children under 15 and 15.3 people aged 65 or over. The pyramid is expansive: its wide base of young cohorts reflects high fertility and a rapidly growing population.
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 | 162,680 | 31.5 | |
| Kiribati | 122,084 | 22.9 | |
| Micronesia (Fed. States of) | 109,910 | 22.8 |





