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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.
The 1860 United States census was the eighth census conducted in the United States starting June 1, 1860, and lasting five months. It determined the population of the United States to be 31,443,321 [ 1 ] in 33 states and 10 organized territories.
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.
The total number immigrating in each decade from 1790 to 1820 are estimates. The number of foreign born in the 1830s and 1840s are extrapolations. Nearly all population growth up to 1830 was by internal increase; about 98.5% of the population was native-born. By 1850, this had shifted to about 90% native-born.
World population estimates from 1800 to 2100, based on: United Nations projections (in 2010) — "high" (colored red), "medium" (orange), and "low" (green) U.S. Census Bureau (historical estimates) — (colored black). Actual recorded population figures (colored blue). According to the highest estimate, the world population may rise to 16 ...
The total peak population size only for the tribes listed in this table is 3,529,240 in the US and Canada (including 507,675 in Canada). This number is very similar to Snow's estimate for the US and Canada [46] and to Alchon's, Denevan's and Milner's estimates. [45] [47] [50]
As the population of the world increases, cities grow in size and population – according to the United Nations, 55% of the world's population live in cities, and by 2050 this number is expected to rise to 68%. [58] Public transportation policy must evolve to meet the changing priorities of the urban world. [59]
1500 world population 400-500 million; 1600 world population 500-600 million; 1700 world population 600-700 million; 1800 world population 850-950 million; In the 18th century world population entered a period of accelerated growth. European population reached a peak growth rate of 10 per thousand per year in the second half of the 19th century.