As of 2025, the population of Trinidad and Tobago is approximately 1.37 million people (1 367 764), making it the 156th most populous country in the dataset of 217 countries, with a 0.02% share of the combined total.
Over the past five years the population of Trinidad and Tobago changed by +0.08%, and over the past ten years by +1.34%. By five-year growth, Trinidad and Tobago ranks 176th of 217 countries; in terms of momentum, growth is slowing — from +0.25% to +0.01% per year.
| Year | Population | Diff | Diff % | Share of Universe |
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