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1. ourworldindata.org › population-projectionsThe UN has made population projections for more than 50 years ...

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   Jun 20, 2023 · We need it to allocate resources and budgets, and to understand health, socioeconomic, environmental, and other demographic trends. That means accurate population projections are very valuable. They let us plan for the future. The United Nations (UN) publishes projections in its World Population Prospects. It has been doing this periodically ...

2. www.prb.org › resources › understanding-populationUnderstanding Population Projections: Assumptions Behind the ...

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   Jul 9, 2014 · The population of a country or area grows or declines through the interaction of three demographic factors: fertility, mortality, and migration. To project future population, demographers make assumptions about how the current rates of births, deaths, and immigration and emigration will change in the future.

3. People also ask

   Why do governments use population projections?

   • Government policymakers and planners around the world use population projections to gauge future demand for food, water, energy, and services, and to forecast future demographic characteristics.

   Understanding and Using Population Projections | PRB

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   Why is population growth important?

   • Population growth is one of the most important topics we cover at Our World in Data. For most of human history, the global population was a tiny fraction of what it is today. Over the last few centuries, the human population has gone through an extraordinary change. In 1800, there were one billion people. Today there are more than 8 billion of us.

   Population Growth - Our World in Data

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   What is a population projection?

   • Population projections represent the future size of a population and the age and sex distribution if the assumptions used hold true. Many users of projections, however, may not be aware of exactly how they are made and do not consider the assumptions and limitations that underlie them.

   Understanding Population Projections: Assumptions Behind the Numbers

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   How do demographers develop population projections?

   • To develop these projections, demographers must make assumptions about future trends related to fertility, mortality, and migration. These assumptions, though based on research and expert opinions, are not certain. Population projections represent the future size of a population and the age and sex distribution if the assumptions used hold true.

   Understanding Population Projections: Assumptions Behind the Numbers

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4. www.prb.org › resources › understanding-and-usingUnderstanding and Using Population Projections | PRB

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   Dec 3, 2001 · The panel cautioned, however, that projections for specific countries, for certain population groups, or for longer periods in the future are less certain than global and shorter-range projections. Users of population projections need to understand the reliability and the limitations of projection series.

5. www.census.gov › programs-surveys › popprojPopulation Projections - Census.gov

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   Nov 9, 2023 · U.S. Population Projected to Begin Declining in Second Half of Century. November 09, 2023. The U.S. population is projected to reach a high of nearly 370 million in 2080 before edging downward to 366 million in 2100. Press Release.

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7. www.un.org › en › desaWorld population projected to reach 9.8 billion in 2050, and ...

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   The current world population of 7.6 billion is expected to reach 8.6 billion in 2030, 9.8 billion in 2050 and 11.2 billion in 2100, according to a new United Nations report being launched today ...

8. www.census.gov › 2023 › population-projectionsU.S. Population Projected to Begin Declining in Second Half ...

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   Nov 16, 2023 · Press Release Number CB23-189. NOV. 9, 2023 — The U.S. population is projected to reach a high of nearly 370 million in 2080 before edging downward to 366 million in 2100. By 2100, the total U.S. resident population is projected to increase by only 9.7% from 2022, according to the latest U.S. Census Bureau population projections released today.

9. ourworldindata.org › population-growthPopulation Growth - Our World in Data

   ourworldindata.org › population-growth

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   Population growth is one of the most important topics we cover at Our World in Data. For most of human history, the global population was a tiny fraction of what it is today. Over the last few centuries, the human population has gone through an extraordinary change. In 1800, there were one billion people. Today there are more than 8 billion of us.