Guam

Name: Guam Population Statistics
Creator: Measured World
Published: 2024-07-01
License: https://creativecommons.org/licenses/by/3.0/igo/

1950

2025

2100

Guam

1950

2025

2100

What to know

Current population: 168,999 (2025).

Growing at +0.83% per year.

Projected to reach 205,502 by 2100 (+22% from today).

Key statistics for 2025

Total population

169K

Density

312 people/km²

Median age

31.5 years

Growth rate

+0.71%

Key terms

Population growth rate: — Annual percentage change in total population size.
Population density: — People per square kilometre of land area.
Median age: — Age at which half the population is younger and half is older.
Sex ratio: — Number of males per 100 females in the population.

The trajectory

Population trajectory

Total population from 1950 to 2100 (projections beyond 2024)

At the current growth rate, the population would double in approximately 84 years.

Population structure

How is the population split by gender?

Male and female population with sex ratio trend

No population by gender data available.

The sex ratio of 102.5 males per 100 females is close to the global average.

Density & aging

Density

People per square kilometre

Median age

Age where half the population is younger

Population density of 312 people per km² is moderate by global standards. The median age is projected to rise by 3 years by 2050, from 31.3 to 34.7.

Rate of change

How fast is the population changing?

Annual percentage change in population size

Growth peaked at 2.62% in 1961.

The bottom line

Guam's population continues to grow, though at a moderate pace. The population is gradually aging, with median age projected to reach 35 by 2050.

Source: UN World Population Prospects 2024. Historical estimates (1950–2024) and medium-variant projections (2025–2100).

Guam - Population Statistics | Measured World

What to know

Current population: 168,999 (2025).

Growing at +0.83% per year.

Projected to reach 205,502 by 2100 (+22% from today).

Key statistics for 2025

Total population

169K

Density

312 people/km²

Median age

31.5 years

Growth rate

+0.71%

Key terms

Population growth rate: — Annual percentage change in total population size.
Population density: — People per square kilometre of land area.
Median age: — Age at which half the population is younger and half is older.
Sex ratio: — Number of males per 100 females in the population.

The trajectory

Population trajectory

Total population from 1950 to 2100 (projections beyond 2024)

At the current growth rate, the population would double in approximately 84 years.

Population structure

How is the population split by gender?

Male and female population with sex ratio trend

No population by gender data available.

The sex ratio of 102.5 males per 100 females is close to the global average.

Density & aging

Density

People per square kilometre

Median age

Age where half the population is younger

Population density of 312 people per km² is moderate by global standards. The median age is projected to rise by 3 years by 2050, from 31.3 to 34.7.

Rate of change

How fast is the population changing?

Annual percentage change in population size

Growth peaked at 2.62% in 1961.

The bottom line

Guam's population continues to grow, though at a moderate pace. The population is gradually aging, with median age projected to reach 35 by 2050.

Source: UN World Population Prospects 2024. Historical estimates (1950–2024) and medium-variant projections (2025–2100).