As of 2025, the population of Niger is approximately 27.92 million people (27 917 831), making it the 54th most populous country in the dataset of 217 countries, with a 0.34% share of the combined total.
Over the past five years the population of Niger changed by +17.71%, and over the past ten years by +40.01%. By five-year growth, Niger ranks 7th of 217 countries; in terms of momentum, growth is slowing — from +3.53% to +3.31% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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