Table 1. Total Population in Households and Group Quarters by Sex and Selected Age Groups, for the United States: 2000 Source: U.S. Census Bureau Internet Release date: March 20, 2001 NOTE: Data not adjusted based on the Accuracy and Coverage Evaluation. For information on confidentiality protection, sampling error, nonsampling error, and definitions, see http://factfinder.census.gov/home/en/datanotes/expplu.html. For definitions of household and group quarters population, see below. ----------------------------------------------------------------------------------------------------------------------------- | | | In group quarters | | |------------------------------------------------------------------------- | | | | Percent of total | | | | | | population in | Institutionalized | Noninstitutionalized Subject | Total | In households | Total | group quarters | population | population ----------------------------------------------------------------------------------------------------------------------------- Both Sexes 281,421,906 273,643,273 7,778,633 2.8 4,059,039 3,719,594 Under 18 years 72,293,812 71,970,901 322,911 0.4 158,118 164,793 18 to 29 years 46,524,790 43,178,224 3,346,566 7.2 811,103 2,535,463 30 to 49 years 85,751,319 84,095,588 1,655,731 1.9 1,173,940 481,791 50 years or more 76,851,985 74,398,560 2,453,425 3.2 1,915,878 537,547 Males 138,053,563 133,551,363 4,502,200 3.3 2,534,064 1,968,136 Under 18 years 37,059,196 36,844,354 214,842 0.6 122,112 92,730 18 to 29 years 23,672,589 21,597,874 2,074,715 8.8 744,755 1,329,960 30 to 49 years 42,659,073 41,305,629 1,353,444 3.2 1,026,062 327,382 50 years or more 34,662,705 33,803,506 859,199 2.5 641,135 218,064 Females 143,368,343 140,091,910 3,276,433 2.3 1,524,975 1,751,458 Under 18 years 35,234,616 35,126,547 108,069 0.3 36,006 72,063 18 to 29 years 22,852,201 21,580,350 1,271,851 5.6 66,348 1,205,503 30 to 49 years 43,092,246 42,789,959 302,287 0.7 147,878 154,409 50 years or more 42,189,280 40,595,054 1,594,226 3.8 1,274,743 319,483 ----------------------------------------------------------------------------------------------------------------------------- Source: U.S. Census Bureau, Census 2000, unpublished tables. Household -- A household includes all people who occupy a housing unit. People not living in households are classified as living in group quarters. Group Quarters Population -- The group quarters population includes all people not living in households. Two general categories of people in group quarters are recognized: 1) the institutionalized population which includes people under formally authorized, supervised care or custody in institutions at the time of enumeration (such as correctional institutions, nursing homes, and juvenile institutions) and 2) the noninstitutionalized population which includes all people who live in group quarters other than institutions (such as college dormitories, military quarters, and group homes).