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Demographic statistics are measures of the characteristics of, or changes to, a population. Records of births, deaths, marriages, immigration and emigration and a regular census of population provide information that is key to making sound decisions about national policy.
The demographics of China demonstrate a large population with a relatively small youth component, partially a result of China's one-child policy. China's population reached 1 billion in 1982.
The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the U.S. Department of Commerce and its director is appointed by the President of the United States.
The United States had an official resident population of 331,893,745 on July 1, 2021, according to the U.S. Census Bureau. This figure includes the 50 states and the District of Columbia but excludes the population of five unincorporated U.S. territories as well as several minor island possessions. The United States is the third most populous country in the world. The Census Bureau showed a population increase of 0.8% for the twelve-month period ending in July 2012. Though high by industrialized country standards, this is below the world average annual rate of 1.1%. The total fertility rate in the United States estimated for 2020 is 1.638 children per woman, which is below the replacement fertility rate of approximately 2.1.
The American Community Survey (ACS) is a demographics survey program conducted by the U.S. Census Bureau. It regularly gathers information previously contained only in the long form of the decennial census, such as ancestry, citizenship, educational attainment, income, language proficiency, migration, disability, employment, and housing characteristics. These data are used by many public-sector, private-sector, and not-for-profit stakeholders to allocate funding, track shifting demographics, plan for emergencies, and learn about local communities. Sent to approximately 295,000 addresses monthly, it is the largest household survey that the Census Bureau administers.
A population decline in humans is a reduction in a human population size. Over the long term, stretching from prehistory to the present, Earth's total human population has continued to grow; however, current projections suggest that this long-term trend of steady population growth may be coming to an end.
Population growth is the increase in the number of people in a population or dispersed group. Global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7.9 billion in 2020. The UN projected population to keep growing, and estimates have put the total population at 8.6 billion by mid-2030, 9.8 billion by mid-2050 and 11.2 billion by 2100. However, some academics outside the UN have increasingly developed human population models that account for additional downward pressures on population growth; in such a scenario population would peak before 2100.
The United States of America has a racially and ethnically diverse population. At the federal level, race and ethnicity have been categorized separately. The most recent United States Census officially recognized five racial categories as well as people of two or more races. The Census Bureau also classified respondents as "Hispanic or Latino" or "Not Hispanic or Latino", identifying Hispanic and Latino as an ethnicity, which comprises the largest minority group in the nation. The Census also asked an "Ancestry Question," which covers the broader notion of ethnicity, in the 2000 Census long form and the 2010 American Community Survey; the question worded differently on "origins" will return in the 2020 Census.
This article lists current estimates of the world population in history. In summary, estimates for the progression of world population since the Late Middle Ages are in the following ranges:
In demographics, the term world population is often used to refer to the total number of humans currently living, and was estimated to have exceeded 7.9 billion as of November 2021. It took over two million years of human prehistory and history for the human population to reach one billion and only 200 years more to grow to 7 billion.
In demographics, an intercensal estimate is an estimate of population between official census dates with both of the census counts being known. Some nations produce regular intercensal estimates while others do not. Intercensal estimates can be less or more informative than official census figures, depending on methodology, completeness, accuracy and date of data, and can be released by nations, subnational entities, or other organizations including those not affiliated with governments. They differ from population projections as they are from past dates, although intercensal estimates can be used to form population projections.
The Arizona Sun Corridor, shortened Sun Corridor, is a megaregion, or megapolitan area, in the southern area of the U.S. state of Arizona. The Sun Corridor is comparable to Indiana in both size and population. It is one of the fastest growing conurbations in the country and is speculated to double its population by 2040. The largest metropolitan areas are the Phoenix metropolitan area – Valley of the Sun, and the Tucson metropolitan area – The Old Pueblo. The regions' populace is nestled in the valley of a desert environment. Similar to Southern California, the urban area extends into Mexico, reaching the communities of Nogales and Agua Prieta.
Utah is the 30th most populous state in the United States with a population of about 3.3 million, according to projections from the US Census Bureau's 2017 estimates. The state has also been characterized by a tremendous amount of growth in the last decade, with the highest percent increase in population of any state since 2010. Utah has a surface area of 84,899 square miles, though around 80% of its population is concentrated around a metropolitan area in the north-central part of the state known as the Wasatch Front.
The Population Estimates Program (PEP) is a program of the US Census Bureau that publishes annual population estimates and estimates of birth, death, and international migration rates for people in the United States. In addition to publishing those aggregate estimates for the entire country, the program also publishes those yearly estimates by age, sex, race, and Hispanic origin at the national, state, county and city and town level. By doing so, the Population Estimates Program provides up-to-date information on how the size and distribution of the US population has changed each year since the most recent 10-year US Census.
Population projections are attempts to show how the human population statistics might change in the future. These projections are an important input to forecasts of the population's impact on this planet and humanity's future well-being. Models of population growth take trends in human development, and apply projections into the future. These models use trend-based-assumptions about how populations will respond to economic, social and technological forces to understand how they will affect fertility and mortality, and thus population growth.
Global Internet Usage is the number of people who use the Internet worldwide.
The racial and ethnic demographics of the United States have changed dramatically throughout its history.
References
- ↑ https://www.census.gov/data/developers/data-sets/international-database.html U.S. Census International Data Base Website