Population of Guam

As of July 2025, the population of Guam is 175.3 thousand. The number of inhabitants has increased by 1 thousand in the last year, representing a growth of 0.66%. The median age of the population has increased in recent years, rising from 29 years in 2015 to 30.4 years in 2025. Currently, life expectancy at birth is 78.9 years and population density is 324 inhabitants per square kilometer.

Population Growth

The population growth rate of Guam peaked in 1981, reaching around 2.66% annually, but has since declined to approximately 0.65% in 2025. The annual increase in the number of people has also decreased from a peak of around 3.01 thousand in 1981 to nearly 1.14 thousand in 2025.

Life Expectancy

In Guam, life expectancy at birth has been increasing, with the indicator rising from 77.2 years in 2005 to 78.9 years in 2025, representing an increase of almost 2 years over the past 2 decades.

Most populous cities in Guam

The cities of Guam are small, with the 5 most populated adding up to around 120 thousand inhabitants. The most populous city is Dededo Village, Dededo, con una diferencia significativa sobre las demás, alcanzando approximately 44.9 thousand inhabitants. It is followed by Yigo Village, Yigo with 20.5 thousand and Tamuning-Tumon-Harmon Village, Tamuning with 19.7 thousand.

These are the 20 most populous cities in Guam: