As of 2025, the population of Kazakhstan is approximately 20.84 million people (20 843 754), making it the 64th most populous country in the dataset of 217 countries, with a 0.25% share of the combined total.
Over the past five years the population of Kazakhstan changed by +6.99%, and over the past ten years by +15.26%. By five-year growth, Kazakhstan ranks 84th of 217 countries; in terms of momentum, growth is slowing — from +1.50% to +1.36% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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