As of 2025, the population of Nauru is approximately 0.01 million people (12 025), making it the 216th 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 Nauru changed by +3.28%, and over the past ten years by +9.78%. By five-year growth, Nauru ranks 134th of 217 countries; in terms of momentum, growth is slowing — from +1.23% to +0.65% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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