City Population 
Principal cities and agglomerations of the world and of many countries (tables and maps).
http://www.citypopulation.de/People Facts
Vital population statistics for countries presented in a sortable display.
http://www.os-connect.com/pop/
Development Education Program, World Bank Group
Teaching and learning materials on social, economic, and environmental issues of sustainable development, including extensive information on interpreting demographic data.
http://www.worldbank.org/depweb
Integrated Population, Land Use, and Emissions Data Project (CIESIN)
Linking georeferenced demographic and socioeconomic data with remote sensing data on land cover and use. Site offers access to several significant population-related and geographic databases.
http://sedac.ciesin.org/plue/
National Statistics Offices
Index to national statistics offices worldwide.
http://www.un.org/Depts/unsd/gs_natstat.htm
Demography and Population Studies WWW Virtual Library
Organized collection of Internet links.
http://demography.anu.edu.au/VirtualLibrary/
Internet Resources for Demographers
Collection of demography links, organized by content.
http://members.tripod.com/~tgryn/demog.html
Population Review
A journal of demography and population studies focusing on both the developing and developed world.
http://www.populationreview.com
H-Demog: Historical Demography
H-Net discussion group dedicated to research, teaching, and historiography. Features subject overview, archives, reports, affiliations, links to related lists and resources, and subscription details. Includes interactive demographic data viewer.
http://www.h-net.org/~demog/
Center for Demographic Research
A non-profit research center providing on population, housing and employment plus GIS mapping services and a range of publications.
http://www.fullerton.edu/cdr/
Life courses in context
A collaboration based on 19th and 20th century Dutch population registers and censuses to provide demograpic information.
http://www.lifecoursesincontext.nl
PopClocks: U.S. and World Population Clocks
Population estimates from the US Census Bureau, updated continuously.
http://www.census.gov/main/www/rss/popclocks.xml
