- Airport Traffic Data (Airports Council International)
- Census Dates For Countries 1945-2014 (U.S. Census Bureau)
- Country Population (Citypopulation.de)
- Country Population 1950 through 2050 (UN Population Database)
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- Eurostat (Statistical Office of the European Communities)
- Global Statistics (GeoHive)
- Health Statistics [World Health Report] (World Health Organization)
- Historical Population Estimates - Europe
- Human Development Reports (UNDP)
- International Data Base (U.S. Bureau of the Census)
- IPUMS International - Census Microdata for Social and Economic Research
- Migration Data (Migration Policy Institute)
- Military Expenditures (SIPRI)
- Military Statistics Data - FIRST Facts by Country (SIPRI)
- OECD Statistics (OECD)
- Penn World Tables (University of Toronto)
- Political, Social and Economic Data
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- Population Index
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- Social Indicators (United Nations Statistics Division)
- Social Science Information Gateway - Statistics (Intute:Social Sciences, U.K.)
- State of World Population 2007 (United Nations Population Fund)
- Trade Statistics (European Union)
- Trade Statistics - UNCTAD Handbook of Statistics 2008 (UNCTAD)
- Trade Statistics (WTO)
- UN Comtrade
- World Bank Data Query
- World Bank eLibrary
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- World Population Information (Census Bureau)
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