As of 2025, the population of Guatemala is approximately 18.69 million people (18 687 881), making it the 69th most populous country in the dataset of 217 countries, with a 0.23% share of the combined total.
Over the past five years the population of Guatemala changed by +7.67%, and over the past ten years by +17.01%. By five-year growth, Guatemala ranks 74th of 217 countries; in terms of momentum, growth is slowing — from +1.68% to +1.49% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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