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The United States population almost quadrupled during the 20th century—at a growth rate of about 1.3% a year—from about 76 million in 1900 to 281 million in 2000. [25] It is estimated to have reached the 200 million mark in 1967, and the 300 million mark on October 17, 2006.
The United States has a racially and ethnically diverse population. [1] At the federal level, race and ethnicity have been categorized separately. The most recent United States census recognized five racial categories (White, Black, Native American/Alaska Native, Asian, and Native Hawaiian/Other Pacific Islander), as well as people who belong to two or more of the racial categories.
Title page of 1790 United States census. The 1790 United States census was the first census in the history of the United States. The population of the United States was recorded as 3,929,214 as of Census Day, August 2, 1790, as mandated by Article I, Section 2 of the US Constitution and applicable laws. [13]
The information on Guam, the Northern Mariana Islands, and American Samoa, add up to more than 100% as the racial data for Hispanics was not broken out separately in the 2020 Census. Race/ethnicity by U.S. state and territory
Since 1903, the official census-taking agency of the United States government has been the Bureau of the Census. The Census Bureau is headed by a director, assisted by a deputy director and an executive staff composed of the associate directors.
The 2020 United States census was the 24th decennial United States census.Census Day, the reference day used for the census, was April 1, 2020.Other than a pilot study during the 2000 census, [1] this was the first U.S. census to offer options to respond online or by phone, in addition to the paper response form used for previous censuses.
United States birth rate (births per 1000 population). [26] The United States Census Bureau defines the demographic birth boom as between 1946 and 1964 [27] (red). In the years after WWII, the United States, as well as a number of other industrialized countries, experienced an unexpected sudden birth rate jump.
In contrast to many other countries, the United States does not have a primary statistical agency. [3] Instead, the statistical system is decentralized, with 13 statistical agencies, two of which are independent agencies and the remaining 11 generally located in different government departments.