How High Temperatures Are Changing Who Gets Born
Hotter weather shifts the balance of births toward fewer males than usual. This matters for maternal health, gender inequality, and the makeup of populations.
Area of Expertise
Population Dynamics & Planning
To build a better tomorrow, communities need insights they can count on.
Powering Policy With Data
Whether forecasting global projections or local estimates, we deliver the reliable data that leaders need to plan for what’s next.
Why It Matters
Good planning starts with trusted numbers. Leaders need to know how populations are changing, from where people live to how fast communities are growing or aging, and which groups are at risk of being overlooked in policymaking. Without this information, resources can be wasted, vulnerable groups overlooked, and communities left unprepared.
How We Drive Change
PRB provides reliable estimates and forecasts so that policies and plans are based on facts, not guesswork. Our work includes:
- Delivering forward-looking data on people, health, housing, and jobs for smarter long-term planning.
- Bringing projections to life with easy-to-understand charts, maps, and key takeaways that highlight patterns and help set priorities.
- Producing accurate estimates of vulnerable and at-risk populations so no group is left out of policy and planning.
Latest News & Insights
How Depopulation Is Slowing Economic Growth in Shelby County, Tennessee
As someone who grew up in Shelby County, Tennessee, I’ve always seen this place as full of potential, rich in culture, history, and community.
U.S. Population Growth Is Slowing to Near Zero
An immigration cliff—combined with fertility declines and population aging—places the United States closer to the demographic experience of Europe.
Are Millennials Really the Bridge to a More Integrated America?
New research finds Millennial adults do live in less segregated neighborhoods than past generations—but progress has been mixed, and diversity does not always mean true integration.
U.S. Population Growth Slowed Dramatically in 2025 as Immigration Dropped, New Data Shows
International migration fell 54%, leading to nation’s slowest rate of growth since 2021. Among states, South Carolina grew fastest.
Five Facts and Trends We're Watching in 2026
Care, the future of work and AI, and other themes we’re keeping an eye on in the new year
Latest Resources
Demographers Are Changing How We Understand Infectious Disease
New research shows how age, place, and social patterns drive the spread and death toll of flu, HIV, and COVID-19
Key Indicators for Student and Faculty Data for Higher Education Data Management: East African Community
Higher education data management covers a broad range of information, including students, faculty, other staff, research and development, facilities, and financial resources.
7 Trends Reshaping the Health and Lifespans of America’s Rapidly Aging Population
Experts point to key dynamics challenging policymakers, health care planners, and families
Webinar: Bridging Research and Policies: Enhancing Budgeting Processes for Africa's Demographic Dividend
PRB hosted a high-level webinar with budget experts, parliamentarians, and national directors to discuss the importance of the Demographic Dividend Sensitive Budgeting approach in enhancing budgeting processes across Africa.
Breaking the Stereotype: Supporting Malawi's Women and Girls for Careers in STEM and Sanitation
Gender equality advances sustainable development, strengthens human rights, and promotes economic growth and development.
Projects
The World Population Data Sheet provides the latest population, health, and environment indicators for more than 200 countries and territories, each carefully researched by PRB’s expert team of demographers and analysts.
With funding from the Appalachian Regional Commission, PRB prepares a series of chartbooks and research reports that analyze demographic and socioeconomic patterns vital to the well-being of the Appalachian Region and its people.
Together with regional partners, PRB is investigating the scale and nature of the challenges affecting the quality of higher education in the East African Community.
PRB provides demographic and socioeconomic forecasts and trend analyses to support regional transportation and housing planning for a six-county region in Southern California.
Informing policymakers, the media, and the public about the importance of data from the decennial census and American Community Survey.