As of 2025, the population of Slovenia is approximately 2.13 million people (2 130 986), making it the 148th most populous country in the dataset of 217 countries, with a 0.03% share of the combined total.
Over the past five years the population of Slovenia changed by +1.36%, and over the past ten years by +3.27%. By five-year growth, Slovenia ranks 160th of 217 countries; in terms of momentum, growth is slowing — from +0.37% to +0.27% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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