birthrate.io does not produce primary statistics. Every figure comes from one of the providers below, and each is reproducible from the original release.
Where a series is assembled from more than one provider — long-run life expectancy, for example — the composition is described in the glossary entry for that indicator. Licence terms below are those of the original provider and govern reuse of the underlying data.
World Development Indicators and population statistics.
Economic and social statistics for OECD members.
City-level fertility, age structure and foreign-born shares from national statistical offices (MHLW/e-Stat, CDC/NCHS, ONS, INSEE, KOSTAT, Destatis, DOS, C&SD, etc.).
Induced abortion rates compiled from WHO and Guttmacher Institute estimates and national health statistics.
Population of urban agglomerations with 300,000+ inhabitants, annual 1950–2035 (estimates to 2018, projections thereafter), UN Population Division.
American Community Survey and Decennial Census figures for U.S. cities, counties and ZCTAs (accessed via Census Reporter).
Provisional / partial-year births and TFR nowcasts compiled from national statistical offices and ministries of health (BirthGauge). Not a substitute for final annual official TFR.
European statistical office — crime, population and social statistics for EU/EFTA and candidate countries.
Compiled long-run demographic series (life expectancy, child mortality and related indicators) from academic reconstructions, HMD, UN IGME and UN WPP.
Detailed mortality and population data for countries with high-quality vital registration, via Our World in Data grapher extracts.
Official UN population estimates and projections.
World Economic Outlook macroeconomic data.
Cohort-component projections derived from World Bank inputs.
Ethnic & racial composition compiled from national population censuses.
Religious composition compiled from Pew Research Center and national censuses.
Bilateral international migrant stock by country of origin and destination (mid-2024 estimates), UN Population Division.
Spotted a figure that looks wrong, or a source we should add? Tell us.
