As of 2025, the population of St. Kitts and Nevis is approximately 0.05 million people (46 922), making it the 203rd 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 St. Kitts and Nevis changed by +0.11%, and over the past ten years by -0.35%. By five-year growth, St. Kitts and Nevis ranks 175th of 217 countries; in terms of momentum, growth is accelerating — from -0.09% to +0.02% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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