As of 2024, the population of Guam is estimated at 168,000 people. This U.S. island territory in the Pacific has experienced steady growth since the mid-20th century, though its population growth has slowed in recent decades. Looking ahead, Guam is projected to continue increasing moderately before stabilizing near the end of the century.
Guam Historical Population Growth (1950–2024)
In 1950, Guam’s population was just 61,000. The island saw rapid growth during the post-war years, fueled by improvements in healthcare, infrastructure, and U.S. military presence. By 1970, the population had climbed to 88,000, and by 1990, it had doubled to nearly 139,000.
Growth slowed after 2000, with Guam’s population stabilizing between 160,000–170,000 over the past two decades. As of 2024, the population is 168,000, showing small but steady gains.
Population by Decade (1950–2024)
| Year | Population (‘000s) |
|---|---|
| 1950 | 61 |
| 1960 | 70 |
| 1970 | 88 |
| 1980 | 110 |
| 1990 | 139 |
| 2000 | 160 |
| 2010 | 167 |
| 2020 | 162 |
| 2024 | 168 |
Guam Future Population Projections (2025–2100)
Guam’s population is projected to continue growing gradually, though at a much slower pace compared to the 20th century. By 2050, the island is expected to reach 191,000 people. Growth is expected to plateau around 206,000 by the end of the century, as fertility rates decline and migration balances population trends.
Projected Population by Decade (2025–2100)
| Year | Population (‘000s) |
|---|---|
| 2030 | 175 |
| 2040 | 184 |
| 2050 | 191 |
| 2060 | 197 |
| 2070 | 201 |
| 2080 | 205 |
| 2090 | 207 |
| 2100 | 206 |
FAQ
In 2024, Guam’s population is estimated at 168,000.
Guam’s population grew from 61,000 in 1950 to 168,000 in 2024, nearly tripling in size.
By 2050, Guam is projected to have around 191,000 people.
Yes, but slowly. Guam’s population will likely peak and stabilize at around 206,000 by the end of the century.
Lower fertility rates, limited land resources, and migration trends are leading to slower long-term growth.
Source:
United Nations. World Population Prospects 2024.
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