Quick facts
Guam population overview
Guam is the 10th most populous of 23 countries and territories in Oceania. The United Nations put the population at 170,410 on 1 January 2026; with an annual growth rate of +0.7% the live estimate on this page rises by roughly 3 people per day.
Over a full year that means about 2,863 births (16.8 per 1,000 people) and 1,210 deaths (7.1 per 1,000), and net emigration of roughly 477 people. The infant mortality rate is 9.4 per 1,000 live births.
World Bank data show the population grew from 69,525 in 1960 to 168,999 in 2025 — a change of +143.1%, or +1.4% per year on average. The population is at its all-time high today.
Demographically, the median age is 31.6 years; life expectancy at birth is 77.8 years; women have on average 2.7 children (2024, above the 2.1 replacement level); 25.9% of residents are under 15 and 13.1% are 65 or older (2025); 94.2% of people live in urban areas (2025).
The capital is Agana. Guam covers 540 km², giving a population density of about 317 people per km². GDP was $6.91B in 2022 — about $41,833 per person (World Bank classification: high income).
Guam population statistics (2026)
| Population (live, October 2026) | 171,347 |
|---|---|
| UN estimate, 1 Jan 2026 | 170,410 |
| World rank | #193 of 238 |
| Rank in Oceania | #10 of 23 |
| Share of world population | 0.002% |
| Annual growth rate | +0.7% |
| Births per year est. | 2,863 |
| Deaths per year est. | 1,210 |
| Net migration per year est. | -477 |
| Birth rate | 16.8 per 1,000 |
| Death rate | 7.1 per 1,000 |
| Infant mortality | 9.4 per 1,000 births |
| Sex ratio | 102.3 males per 100 females |
| Median age | 31.6 years |
| Life expectancy | 77.8 years |
| Fertility rate 2024 | 2.7 births per woman |
| Urban population 2025 | 94.2% |
| Surface area 2023 | 540 km² |
| Population density | 317 per km² |
| Capital | Agana |
| GDP (current US$) 2022 | $6.91B |
| GDP per capita 2022 | $41,833 |
| Income group World Bank | High income |
Guam population by year
| Year | Population | Change | Annual growth |
|---|---|---|---|
| October 2026 (live, UN-based) | 171,347 | – | – |
| 2025 | 168,999 | +1,222 | +0.7% |
| 2024 | 167,777 | +1,271 | +0.8% |
| 2023 | 166,506 | +1,326 | +0.8% |
| 2022 | 165,180 | +1,450 | +0.9% |
| 2021 | 163,730 | +1,572 | +1% |
| 2020 | 162,158 | -2,747 | -0.3% |
| 2015 | 164,905 | -1,617 | -0.2% |
| 2010 | 166,522 | +2,157 | +0.3% |
| 2005 | 164,365 | +4,300 | +0.5% |
| 2000 | 160,065 | +10,011 | +1.3% |
| 1995 | 150,054 | +11,444 | +1.6% |
| 1990 | 138,610 | +14,493 | +2.2% |
| 1985 | 124,117 | +13,976 | +2.4% |
| 1980 | 110,141 | +11,084 | +2.1% |
| 1975 | 99,057 | +10,692 | +2.3% |
| 1970 | 88,365 | +9,433 | +2.3% |
| 1965 | 78,932 | +9,407 | +2.6% |
| 1960 | 69,525 | – | – |
Change and annual growth are measured against the previous row; growth is annualized where rows are five years apart. The live row extrapolates the UN estimate and is not directly comparable with the World Bank series.
About Guam
Population over time
- From 69,525 in 1960 to 171,347 today — up 146.5%.
- The population is at its all-time high right now.
- Average change over the last 10 years of data: +0.2% per year.
Life expectancy & fertility
- Life expectancy at birth: 77.4 years (2024), up 14.5 years since 1960.
- Fertility: 2.7 births per woman (2024) — above the ~2.1 replacement level.
Birth & death rates
- Latest: 17.3 births vs 6.9 deaths per 1,000 people (2024).
- Natural increase of 10.4 per 1,000 a year, before migration.
Age structure
- 25.9% of the population is under 15 and 13.1% is 65 or older (2025).
- The 65+ share has grown from 1.6% in 1960 — the population is aging.
CO₂ emissions
- Latest total: 0 Mt CO₂ (2024).
- Emissions peaked at 0 Mt in 2019 — down 25% since.
- Per person: 0 t in 2024, vs 0 t in 1970.
Energy use & renewables
- Renewables supplied 6.7% of final energy in 2022 (+6.2 points since 1990).
Forest area (% of land)
- Forest covers 51.9% of land area (2023).
- Net afforestation: cover grew from 44.4% to 51.9% since 1990 — roughly 40 km² of forest gained.
Urban population (% of total)
- 94.2% of people live in urban areas (2025), vs 79.3% in 1960 (+14.9 points).
- Majority-urban for the whole period covered.
Economy
- GDP: $6.91B in 2022.
- Nominal GDP is up 31.2% since 2012.
- That works out to $41,833 per person.
Unemployment & inflation
- Unemployment: 5.6% of the labor force (2025, ILO estimate).
Internet & mobile
- 80.5% of people used the internet in 2017.
- Mobile subscriptions: 59.8 per 100 people (2004).
Guam in the news
Frequently asked questions
What is the population of Guam in 2026?
As of October 2026, Guam has an estimated population of 171,347. The United Nations estimated 170,410 residents on 1 January 2026; the live figure on this page extrapolates that estimate using the +0.7% annual growth rate.
Is the population of Guam growing or shrinking?
It is growing at +0.7% per year — roughly 3 more people every day. Each year there are about 2,863 births and 1,210 deaths, with net migration of -477.
What is the population density of Guam?
About 317 people per square kilometre: 171,347 people living on 540 km² of surface area (World Bank, 2023).
What is the median age in Guam?
The median age is 31.6 years, and life expectancy at birth is 77.8 years. 25.9% of the population is under 15 and 13.1% is 65 or older (2025).
How does Guam rank by population?
Guam is the 193rd most populous of 238 countries and territories worldwide and the 10th in Oceania, with 0.002% of the global population.
How has the population of Guam changed over time?
In 1960 the population was 69,525; by 2025 it had grown to 168,999 (+143.1%). The year-by-year table above lists the full World Bank series.
Explore more
Australia
Papua New Guinea
New Zealand
Fiji
Saint Lucia
Curaçao
Kiribati
SeychellesSources & method: the live population is a linear extrapolation of the UN World Population Prospects estimate for 1 January 2026 using the annual growth rate (+0.7%); births, deaths and migration counters apply the UN crude rates to the live figure. Historical series, area, GDP and other indicators are from World Bank Open Data; the encyclopedic summary is from Wikipedia. Figures are statistical estimates, not census counts. Page generated 2026-10-19. More about our data.