As of 2025, the population of Slovak Republic is approximately 5.41 million people (5 413 813), making it the 122nd most populous country in the dataset of 217 countries, with a 0.07% share of the combined total.
Over the past five years the population of Slovak Republic changed by -0.82%, and over the past ten years by -0.18%. By five-year growth, Slovak Republic ranks 186th of 217 countries; in terms of momentum, the decline is accelerating — from +0.13% to -0.17% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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