Population Pyramids of the World from 1950 to 2100

Guam Population Pyramid 1978

Guam
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1978
Population: 105,423

Year

-5 -1   1978  +1 +5

Country

A B C D E F G H I J K L M N O P Q R S T U V W Y Z
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Summary

Guam in 1978

As of 1978, Guam counted 105,424 inhabitants. A decade earlier, in 1968, the population was 84,563; it has grown by 24.7% since.

Half of the population was younger than 21.8 years; 35.3% were children under 15 and 2.4% were 65 or older. This is an expansive pyramid — each cohort of children is larger than the one above it, the signature of high birth rates and rapid growth.

Ranks #187 of 201 by population Ranks #66 of 201 by median age Ranks #102 of 201 by growth

Share of the population by age group, 1950–2100

Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.

Key indicators for Guam
Population
105,424
Median age
21.8
0-14 %
35.3%
65+ %
2.4%
Child dependency
56.7
Old-age dependency
3.9
Region
OCEANIA
Pyramid shape
Expansive
Population 2050
191,459
Population 2100
205,502
What is driving the change
Births per woman
Total fertility rate, 1960–2023
123456
1960Replacement level (2.1)2023 · 2.78

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.

Life expectancy at birth
Years, 1960–2023
Total Women Men
5060708090
19602023 · 77.2

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.

People supported per 100 workers
Dependency ratios, 1950–2100
Children Older adults
20406080
19502100
Migration to and from Guam
Where immigrants come from (2024)

77,104 immigrants live in Guam, 46.0% of the population.

Philippines32,415
United States of America20,469
Micronesia (Fed. States of)11,767
Puerto Rico4,367
Republic of Korea2,996
Where emigrants live (2024)

196 people born in Guam live in other countries.

Australia141
Micronesia (Fed. States of)38
Mexico10
Costa Rica7
Explore
Immigration statistics Origin of migrant stocks map

Source: United Nations International Migrant Stock 2024.

How Guam compares with its neighbours
Country Population Median age Relative size
Guam 105,424 21.8
Micronesia (Fed. States of) 72,755 16.1
Kiribati 59,865 18.3
Frequently asked questions about Guam's population
What was the population of Guam in 1978?
In 1978, Guam's population was 105,424.
Is Guam's population growing or shrinking?
Yes, growing: up 24.7% from 1968, with a projected population of 191,459 in 2050.
What is the median age in Guam?
The median age in Guam is 21.8 years — half the population is younger, half older.
What share of Guam's population is over 65 or under 15?
2.4% of Guam's population is 65 or older, and 35.3% is under 15.
What type of population pyramid does Guam have?
Guam has an expansive pyramid: a wide base of young cohorts reflecting high fertility and continued population growth.

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