Guam Demographics

Population of Guam (2026)

View live population, charts & trends: Population of Guam

Guam Population
170,185
see live
Yearly Change
+0.70%
Global Share
< 0.01%
Global Rank
192

Median Age

The median age in Guam is 31.6 years (2026).

Fertility in Guam

A Total Fertility Rate (TFR) of 2.1 represents the Replacement-Level Fertility : the average number of children per woman needed for each generation to exactly replace itself without needing international immigration. A value below 2.1 will cause the native population to decline


Total Fertility Rate (TFR)
2.68
(Live Births per Woman, 2026)

Life Expectancy in Guam

See also: Countries in the world ranked by Life Expectancy

Both Sexes
77.8
(life expectancy at birth, both sexes combined)
Females
81.9
(life expectancy at birth, females)
Males
74.1
(life expectancy at birth, males)


Infant Mortality Rate and Deaths of Children under 5 Years Old in Guam


Infant Mortality
9.4
(infant deaths per 1,000 live births)
Deaths under age 5
11.1
(per 1,000 live births)


Guam Urban Population

Currently, 94.3% of the population of Guam is urban (160,444 people in 2026)


Population Density

The 2026 population density in Guam is 313 people per km² (810 people per mi2), calculated on a total land area of 544 km² (210 sq. miles).

Largest Census-Designated Places in Guam

The 30 largest of 56 census-designated places, ranked by population at the census of April 1, 2020 (by U.S. Census Bureau). Census-designated places are settlements the census bureau outlines for counting. They have no local government of their own.

RankCensus-Designated PlacePopulation
1Dededo6,855
2Machanao5,809
3Apotgan5,224
4Y Papao5,213
5Mangilao5,145
6Liguan4,653
7Mataguac4,653
8Upper Tumon4,081
9North Gayinero3,997
10Astumbo3,921
11Tamuning3,892
12Chalan Pago3,826
13South Gayinero3,807
14Machananao East3,643
15Adacao3,638
16Agana Heights3,616
17Barrigada3,559
18Macheche3,500
19University of Guam3,388
20Agat3,292
21Machananao West3,246
22Ordot3,238
23Mongmong3,123
24Yona3,065
25Mogfog2,998
26Apra Harbor2,930
27Wusstig2,687
28Chaguian2,524
29Toto2,443
30Anao2,385
See all 56 census-designated places in Guam

See also

Sources

Definitions

Population Pyramid

A Population pyramid (also called "Age-Sex Pyramid") is a graphical representation of the age and sex of a population.

Types:

  • Expansive - pyramid with a wide base (larger percentage of people in younger age groups, indicating high birth rates and high fertility rates) and narrow top (high death rate and lower life expectancies). It suggests a growing population. Example: Nigeria Population Pyramid
  • Constrictive - pyramid with a narrow base (lower percentage of younger people, indicating declining birth rates with each succeeding age group getting smaller than the previous one). Example: United States
  • Stationary - with a somewhat equal proportion of the population in each age group. The population is stable, neither increasing nor decreasing.

Stages:

Population pyramid stages

Dependency Ratio

There are three types of age dependency ratio: Youth, Elderly, and Total. All three ratios are commonly multiplied by 100.

Youth Dependency Ratio

Definition: population ages 0-15 divided by the population ages 16-64.

Formula: ([Population ages 0-15] ÷ [Population ages 16-64]) × 100

Elderly dependency ratio

Definition: population ages 65-plus divided by the population ages 16-64.

Formula: ([Population ages 65-plus] ÷ [Population ages 16-64]) × 100

Total dependency ratio

Definition: sum of the youth and old-age ratios.

Formula: (([Population ages 0-15] + [Population ages 65-plus]) ÷ [Population ages 16-64] ) × 100

NOTE: Dependency Ratio does not take into account labor force participation rates by age group. Some portion of the population counted as "working age" may actually be unemployed or not in the labor force whereas some portion of the "dependent" population may be employed and not necessarily economically dependent.