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For 1790 through 1990, tables are taken from the U.S Census Bureau's "Population of the 100 Largest Cities and Other Urban Places in the United States: 1790 to 1990." [1] For year 2000 rankings, data from the Census Bureau's tally of "Cities with 100,000 or More Population Ranked by Selected Subject" is used. [2]
The table below shows annual population growth rate history and projections for various areas, countries, regions and sub-regions from various sources for various time periods. The right-most column shows a projection for the time period shown using the medium fertility variant. Preceding columns show actual history.
The United Nations estimated an annual population increase of 1.14% for the year of 2000. [12] The current world population growth is approximately 1.09%. [ 5 ] People under 15 years of age made up over a quarter of the world population (25.18%), and people age 65 and over made up nearly ten percent (9.69%) in 2021. [ 5 ]
As the United States has grown in area and population, new states have been formed out of U.S. territories or the division of existing states. The population figures provided here reflect modern state boundaries. Shaded areas of the tables indicate census years when a territory or the part of another state had not yet been admitted as a new state.
Graph of world population over the past 12,000 years . As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.
A population history of the United States (Cambridge University Press, 2012) excerpt [permanent dead link ] Lahey, Joanna N. "Birthing a Nation: The Effect of Fertility Control Access on the Nineteenth-Century Demographic Transition," Journal of Economic History, 74 (June 2014), 482–508.
The 1960 United States census, conducted by the Census Bureau, determined the resident population of the United States to be 179,323,175, an increase of 19 percent over the 151,325,798 persons enumerated during the 1950 census. This was the first census in which all states recorded a population of over 200,000.
In world demographics, the world population is the total number of humans currently alive. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 218 more years to reach 8 billion.