- How Big is Big
An activity from the Asia Society comparing population density and growth across various countries and regions
- Population Action International
The PAI web site features resources related to population issues worldwide. Take the Pop Quiz, view population facts and figures, or read reports about important issues.
- Population Issues in India and China
A National Geographic high school lesson comparing different approaches to population control
- Population Reference Bureau
Statistics and backgrounders on a wide range of population topics
- Squatter City
Journalist Robert Neuwirth's blog on squatters and squatter cities around the world
- The New Global City
A report from the Ford Foundation on the challenges and opportunities resulting from large-scale urbanization
- The Urban Frontier
A series from National Public Radio on urbanization, with stories from some of the world's largest cities
- U.S. Census Bureau: International Programs Center
The International Programs Center (IPC), which is part of the Population Division of the U.S. Bureau of the Census, conducts demographic and socioeconomic studies and strengthens statistical development around the world through technical assistance, training, and software products. Its work is commissioned and funded by federal agencies, international organizations, non-governmental organizations, private businesses, and other governments. This site offers statistics and links to information about world population.
- United Nations Population Division
Population data and fact sheets for global trends in population, migration, urbanization and other topics
- Zero Population Growth
Zero Population Growth (ZPG) is a national nonprofit organization working to slow population growth and achieve a sustainable balance between the Earth's people and its resources. ZPG offers a large selection of resources for educators.