As of 2025, the population of Belize is approximately 0.42 million people (422 924), making it the 174th most populous country in the dataset of 217 countries, with a 0.01% share of the combined total.
Over the past five years the population of Belize changed by +8.22%, and over the past ten years by +18.69%. By five-year growth, Belize ranks 72nd of 217 countries; in terms of momentum, growth is slowing — from +1.86% to +1.59% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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