2000 United States Census

Twenty-second Census
of the United States

U.S. Census Bureau Seal

Census Logo
General information
Country United States
Date taken April 1, 2000
Total population 281,421,906
Percent change Increase 13.2%
Most populous state California
Least populous state Wyoming

The Twenty-second United States Census, known as Census 2000 and conducted by the Census Bureau, determined the resident population of the United States on April 1, 2000, to be 281,421,906, an increase of 13.2% over the 248,709,873 people enumerated during the 1990 Census.[1] This was the twenty-second federal census and was at the time the largest civilly administered peacetime effort in the United States.[2]

Approximately 16 percent of households received a "long form" of the 2000 census, which contained over 100 questions. Full documentation on the 2000 census, including census forms and a procedural history, is available from the Integrated Public Use Microdata Series.

Data availability

Microdata from the 2000 census is freely available through the Integrated Public Use Microdata Series. Aggregate data for small areas, together with electronic boundary files, can be downloaded from the National Historical Geographic Information System. Personally identifiable information will be available in 2072.[3]

State rankings

Population as of
1990 Census[4]
Population as of
2000 Census[4]
1  California 29,760,021 33,871,648 Increase 4,111,627 Increase 13.8%
2  Texas 16,986,510 20,851,820 Increase 3,865,510 Increase 22.8%
3  New York 17,990,455 18,976,457 Increase 986,002 Increase 5.5%
4  Florida 12,937,926 15,982,378 Increase 3,044,452 Increase 23.5%
5  Illinois 11,430,602 12,419,293 Increase 988,691 Increase 8.6%
6  Pennsylvania 11,881,643 12,281,054 Increase 399,411 Increase 3.4%
7  Ohio 10,847,115 11,353,140 Increase 506,025 Increase 4.7%
8  Michigan 9,295,297 9,938,444 Increase 643,147 Increase 6.9%
9  New Jersey 7,730,188 8,414,350 Increase 684,162 Increase 8.9%
10  Georgia 6,478,216 8,186,453 Increase 1,708,237 Increase 26.4%
11  North Carolina 6,628,637 8,049,313 Increase 1,420,676 Increase 21.4%
12  Virginia 6,187,358 7,078,515 Increase 891,157 Increase 14.4%
13  Massachusetts 6,016,425 6,349,097 Increase 332,672 Increase 5.5%
14  Indiana 5,544,159 6,080,485 Increase 536,326 Increase 9.7%
15  Washington 4,866,692 5,894,121 Increase 1,027,429 Increase 21.1%
16  Tennessee 4,877,185 5,689,283 Increase 812,098 Increase 16.7%
17  Missouri 5,117,073 5,595,211 Increase 478,138 Increase 9.3%
18  Wisconsin 4,891,769 5,363,675 Increase 471,906 Increase 9.6%
19  Maryland 4,781,468 5,296,486 Increase 515,018 Increase 10.8%
20  Arizona 3,665,228 5,130,632 Increase 1,465,404 Increase 40.0%
21  Minnesota 4,375,099 4,919,479 Increase 544,380 Increase 12.4%
22  Louisiana 4,219,973 4,468,976 Increase 249,003 Increase 5.9%
23  Alabama 4,040,587 4,447,100 Increase 406,513 Increase 10.1%
24  Colorado 3,294,394 4,301,261 Increase 1,006,867 Increase 30.6%
25  Kentucky 3,685,296 4,041,769 Increase 356,473 Increase 9.7%
26  South Carolina 3,486,703 4,012,012 Increase 525,309 Increase 15.1%
27  Oklahoma 3,145,585 3,450,654 Increase 305,069 Increase 9.7%
28  Oregon 2,842,321 3,421,399 Increase 579,078 Increase 20.4%
29  Connecticut 3,287,116 3,405,565 Increase 118,449 Increase 3.6%
30  Iowa 2,776,755 2,926,324 Increase 149,569 Increase 5.4%
31  Mississippi 2,573,216 2,844,658 Increase 271,442 Increase 10.5%
32  Kansas 2,477,574 2,688,418 Increase 210,844 Increase 8.5%
33  Arkansas 2,350,725 2,673,400 Increase 322,675 Increase 13.7%
34  Utah 1,722,850 2,233,169 Increase 510,319 Increase 29.6%
35  Nevada 1,201,833 1,998,257 Increase 796,424 Increase 66.3%
36  New Mexico 1,515,069 1,819,046 Increase 303,977 Increase 20.1%
37  West Virginia 1,793,477 1,808,344 Increase 14,867 Increase 0.8%
38  Nebraska 1,578,385 1,711,263 Increase 132,878 Increase 8.4%
39  Idaho 1,006,749 1,293,953 Increase 287,204 Increase 28.5%
40  Maine 1,227,928 1,274,923 Increase 46,995 Increase 3.8%
41  New Hampshire 1,109,252 1,235,786 Increase 126,534 Increase 11.4%
42  Hawaii 1,108,229 1,211,537 Increase 103,308 Increase 9.3%
43  Rhode Island 1,003,464 1,048,319 Increase 44,855 Increase 4.5%
44  Montana 799,065 902,195 Increase 103,130 Increase 12.9%
45  Delaware 666,168 783,600 Increase 117,432 Increase 17.6%
46  South Dakota 696,004 754,844 Increase 58,840 Increase 8.5%
47   North Dakota 638,800 642,200 Increase 3,400 Increase 0.5%
48  Alaska 550,043 626,932 Increase 76,889 Increase 14.0%
49  Vermont 562,758 608,827 Increase 46,069 Increase 8.2%
 District of Columbia 606,900 572,059 Decrease -34,841 Decrease -5.7%
50  Wyoming 453,588 493,782 Increase 40,194 Increase 8.9%
   United States 248,709,873 281,421,906 32,712,033 13.2%

Population profile

The U.S. resident population includes the total number of people in the 50 states and the District of Columbia. The Bureau also enumerated the residents of the U.S. territory of Puerto Rico; its population was 3,808,610, an 8.1% increase over the number from a decade earlier.

In an introduction to a more detailed population profile (see references below), the Census Bureau highlighted the following facts about U.S population dynamics:

Changes in population

Regionally, the South and West experienced the bulk of the nation's population increase, 14,790,890 and 10,411,850, respectively. This meant that the mean center of U.S. population moved to Phelps County, Missouri. The Northeast grew by 2,785,149; the Midwest by 4,724,144.

(maps not to scale)


The results of the census are used to determine how many congressional districts each state is apportioned. Congress defines the formula, in accordance with Title 2 of the U.S. Code, to reapportion among the states the 435 seats in the United States House of Representatives. The apportionment population consists of the resident population of the fifty states, plus the overseas military and federal civilian employees and their dependents living with them who could be allocated to a state. Each member of the House represents a population of about 647,000. The populations of the District of Columbia and Puerto Rico are excluded from the apportionment population because they do not have voting seats in the U. S. House of Representatives.

Since the first census in 1790, the decennial count has been the basis for the United States representative form of government. Article I, Section II specifies that "The Number of Representatives shall not exceed one for every thirty Thousand, but each State shall have at Least one Representative." In 1790, each member of the House represented about 34,000 residents. Since then, the House more than quadrupled in size, and in 1911 the number of representatives was fixed at 435. Today, each member represents about 20 times as many constituents.

Adjustment controversy

In the years leading up to the 2000 census, there was substantial controversy over whether the Bureau should adjust census figures based on a follow-up survey, called the post-enumeration survey, of a sample of blocks. (In 1999, the Supreme Court ruled 5-4 that the Constitution prohibits the use of such figures for apportionment purposes, but it may be permissible for other purposes where feasible.) The controversy was partly technical, but also partly political, since based on data from the 1990 census both parties believed that adjustment would likely have the effect, after redistricting, of slightly increasing Democratic representation in legislative bodies, but would also give Utah an additional, probably Republican, representative to Congress.[7][8]

Following the census, discrepancies between the adjusted census figures and demographic estimates of population change could not be resolved in time to meet legal deadlines for the provision of redistricting data, and the Census Bureau therefore recommended that the unadjusted results be used for this purpose.[9] This recommendation was followed by the Secretary of Commerce (the official in charge of making the determination).

Utah controversy

After the census was tabulated, Utah challenged the results in two different ways. Utah was extremely close to gaining a fourth congressional seat, falling 857 people short, which in turn was allocated to North Carolina. The margin was later shortened to 80 people, after the federal government discovered that it overcounted the population of North Carolina by 2,673 residents.[10] The Census Bureau counted members of the military and other federal civilian employees serving abroad as residents of their home state but did not count other individuals living outside the United States. Utah claimed that individuals traveling abroad as religious missionaries should be counted as residents and that the failure to do so imposed a burden on Mormon religious practice. Almost half of all Mormon missionaries, more than 11,000 individuals, were from Utah; only 102 came from North Carolina. If this policy were changed, then Utah would have received an additional seat instead of North Carolina. On November 26, 2002, the Supreme Court affirmed the lower court ruling that rejected Utah's efforts to have Mormon missionaries counted.[11]

The state of Utah then filed another lawsuit alleging that the statistical methods used in computing the state populations were improper and cost Utah the seat. The Bureau uses a method called imputation to assign a number of residents to addresses where residents cannot be reached after multiple efforts. While nationwide the imputation method added .4% to the population, the rate in Utah was .2%. The state challenged that the use of imputation violates the Census Act of 1957 and that it also fails the Constitution's requirement in Article I, Section 2 that an "actual enumeration" be used for apportionment.[12] This case, Utah v. Evans, made it to the Supreme Court, but Utah was again defeated.[13]

Gay and lesbian controversy

Census 2000 Long Form Questionnaire showing the Person 2 section including questions 2 and 3 which allow data to be compiled regarding same-sex partners

The census forms did not include any questions regarding sexual orientation, making it impossible to compile data comparing heterosexual and homosexual populations. However, two questions were asked that allowed same-sex partnerships to be counted. The questionnaires asked the sex of each person in a household and they asked what the relationship was between each of the members of the household. Respondents could check "Husband/wife" or "unmarried partner" or a number of other relationships.[14][15] Responses were tabulated and the Census Bureau reported that there were more than 658,000 same-sex couples heading households in the United States. However, only about 25% of gay men and 40% of lesbians are in shared-household partnerships at any one time, according to non-Census surveys.[16] For every same-sex couple tallied in the census, there could be three to six more homosexual un-partnered individuals who would not be counted as gay. The Census reported that same-sex male couples numbered 336,001 and female same-sex couples numbered 329,522.[17] Extrapolating from those figures and the surveyed partnering habits of homosexuals, as many as 4.3 million homosexual adults could have been living in the U.S. in 2000. The exact number cannot be known because the Census did not count them specifically. Bisexual and transgender populations were not counted, either, because there were no questions regarding this information. Also unavailable is the number of additional same-sex couples living under the same roof as the first, though this applies to additional heterosexual couples as well. The lack of accurate numbers makes it difficult for lawmakers who are considering legislation on hate crimes or social services for gay families with children.[18] It also makes for less accuracy when predicting the fertility of a population.[19]

Another issue that concerned gay rights advocates involved the automatic changing of data during the tabulation process. This automatic software data compiling method, called allocation, was designed to counteract mistakes and discrepancies in returned questionnaires. Forms that were filled out by two same-sex persons who checked the "Husband/wife" relationship box were treated as a discrepancy. The Census Bureau explained that same-sex "Husband/wife" data samples were changed to "unmarried partner" by computer processing methods in 99% of the cases. In the remaining 1%, computer systems used one of two possibilities: a) one of the two listed sexes was changed, making the partnership appear heterosexual, or b) if the two partners were more than 15 years apart in age, they might have been reassigned into a familial parent/child relationship.[20] The process of automatic reassignment of same-sex marriage data was initiated so that the Census Bureau would not contravene the Defense of Marriage Act passed in 1996. The Act states:

In determining the meaning of any Act of Congress, or of any ruling, regulation or interpretation of the various administrative bureaus and agencies of the United States, the word 'marriage' means only a legal union between one man and one woman as husband and wife, and the word 'spouse' refers only to a person of the opposite sex who is a husband or wife.[20]

With allocation moving married same-sex couples to the unmarried partner category, social scientists lost information that could have been extracted relating to the social stability of a same gender couple who identify themselves as married.[19]


  1. "Population and Area (Historical Censuses)" (PDF). United States Census Bureau. Archived (PDF) from the original on June 24, 2008. Retrieved June 20, 2008.
  2. "Census.gov ''Introduction to Census 2000 Data Products''" (PDF). Retrieved April 25, 2011.
  3. PIO, US Census Bureau, Census History Staff,. "The "72-Year Rule" - History - U.S. Census Bureau". www.census.gov. Retrieved 2015-10-26.
  4. 1 2 "Resident Population of the 50 States, and the District of Columbia April 1, 2000 (Census 2000) and April 1, 1990 (1990 Census)". United States Census Bureau. December 28, 2000. Retrieved August 24, 2012.
  5. Jayson, Sharon. "'Colorblind' Generation Doesn't Blink at interracial Relationships." USA TODAY. February 7, 2006: n.p. SIRS Researcher. Web. Oct 25, 2010.
  6. Newburger, Eric (September 2001). "Home Computers and Internet Use in the United States: August 2000" (PDF). Current Population Reports. U.S. CENSUS BUREAU: 1–2. Retrieved December 5, 2014.
  7. "Partisan Politics at Work:Sampling and the 2000 Census". American Political Science Association. JSTOR 420917.
  8. Archived January 22, 2006, at the Wayback Machine.
  9. "Census 2000 ESCAP". Census.gov. Retrieved April 25, 2011.
  10. "Census Blooper Costly for Utah; Error May Have Resulted in Loss of House Seat". The Salt Lake Tribune. October 1, 2003. Archived from the original on March 15, 2009. Retrieved February 25, 2009.
  11. Greenhouse, Linda. "Justices Deal Utah a Setback In Its Bid to Gain a House Seat", The New York Times, November 27, 2001. Accessed July 16, 2008.
  12. Greenhouse, Linda. "Supreme Court Roundup; Justices to Hear Utah's Challenge to Procedure in 2000 Census", The New York Times, January 23, 2002. Accessed July 16, 2008.
  13. Greenhouse, Linda. "THE SUPREME COURT: RIGHT TO PRIVACY; Supreme Court Finds Law On Educational Privacy Isn't Meant for Individuals", The New York Times, June 21, 2002. Accessed July 16, 2008.
  14. "Census 2000 Long Form Questionnaire" (PDF). Archived (PDF) from the original on June 4, 2011. Retrieved April 25, 2011.
  15. "Census 2000 Short Form Questionnaire" (PDF). Archived (PDF) from the original on June 4, 2011. Retrieved April 25, 2011.
  16. "Gay and Lesbian Demographics". Urban.org. Archived from the original on April 28, 2011. Retrieved April 25, 2011.
  17. "US Census unmarried couple data listed by state". Gaydemographics.org. Archived from the original on August 18, 2009. Retrieved April 25, 2011.
  18. Ly, Phuong (March 12, 2000). "The Washington Post, March 12, 2000. Be Counted In Census, Groups Urge Gay Live-Ins". Pqasb.pqarchiver.com. Retrieved April 25, 2011.
  19. 1 2 "Unbinding the Ties: Edit Effects of Marital Status on Same Gender Couples". Census.gov. January 7, 2009. Retrieved April 25, 2011.
  20. 1 2 "Technical Note on Same-Sex Unmarried Partner Data From the 1990 and 2000 Censuses". Census.gov. January 7, 2009. Retrieved April 25, 2011.

Further reading

External links

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