Demographic features of the population of Tuvalu include the age structure, ethnicity, education level, life expectancy, religious affiliations and other aspects of the population.

The Congregational Christian Church of Tuvalu, commonly the Church of Tuvalu, is a Christian church which is the state church of Tuvalu, although this status merely entitles it to "the privilege of performing special services on major national events"; its adherents comprise about 86% of the 11,600 inhabitants of the archipelago.