As of 2025, the population of Guam is approximately 0.17 million people (168 999), making it the 184th most populous country in the dataset of 217 countries, with a 0.00% share of the combined total.
Over the past five years the population of Guam changed by +4.22%, and over the past ten years by +2.48%. By five-year growth, Guam ranks 120th of 217 countries; in terms of momentum, growth is accelerating — from -0.34% to +0.83% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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