Language Spoken At Home in Prince William County
*Base on 2012 Data
| Population 5 years and over | 370,732 | 100% |
| English only | 261,364 | 70.5% |
| Language other than English | 109,368 | 29.5% |
| Speak English less than very well | 45,364 | 12.2% |
| Spanish | 65,442 | 17.7% |
| Speak English less than very well | 30,860 | 8.3% |
| Other Indo-European languages | 17,856 | 4.8% |
| Speak English less than very well | 4,748 | 1.3% |
| Asian and Pacific Islander languages | 16,088 | 4.3% |
| Speak English less than very well | 7,089 | 1.9% |
| Other languages | 9,982 | 2.7% |
| Speak English less than very well | 2,667 | 0.7% |
Ancestry in Prince William County
*Base on 2012 Data
| Total population | 404,011 | 100% |
| American | 20,716 | 5.1% |
| Arab | 3,579 | 0.9% |
| Czech | 1,291 | 0.3% |
| Danish | 1,193 | 0.3% |
| Dutch | 2,914 | 0.7% |
| English | 33,131 | 8.2% |
| French (except Basque) | 8,091 | 2.0% |
| French Canadian | 2,457 | 0.6% |
| German | 48,751 | 12.1% |
| Greek | 1,875 | 0.5% |
| Hungarian | 1,180 | 0.3% |
| Irish | 40,436 | 10.0% |
| Italian | 18,353 | 4.5% |
| Lithuanian | 813 | 0.2% |
| Norwegian | 2,089 | 0.5% |
| Polish | 9,439 | 2.3% |
| Portuguese | 993 | 0.2% |
| Russian | 2,846 | 0.7% |
| Scotch-Irish | 4,086 | 1.0% |
| Scottish | 7,901 | 2.0% |
| Slovak | 1,278 | 0.3% |
| Subsaharan African | 14,503 | 3.6% |
| Swedish | 3,788 | 0.9% |
| Swiss | 1,233 | 0.3% |
| Ukrainian | 1,157 | 0.3% |
| Welsh | 2,597 | 0.6% |
| West Indian (excluding Hispanic origin groups) | 3,830 | 0.9% |
Households By Type in Prince William County
*Base on 2012 Data
| Total households | 129,643 | 100% |
| Family households (families) | 100,266 | 77.3% |
| With own children under 18 years | 55,164 | 42.6% |
| Married-couple family | 77,536 | 59.8% |
| With own children under 18 years | 42,154 | 32.5% |
| Male householder, no wife present, family | 6,783 | 5.2% |
| With own children under 18 years | 3,888 | 3.0% |
| Female householder, no husband present, family | 15,947 | 12.3% |
| With own children under 18 years | 9,122 | 7.0% |
| Nonfamily households | 29,377 | 22.7% |
| Householder living alone | 22,909 | 17.7% |
| 65 years and over | 5,208 | 4.0% |
| Households with one or more people under 18 years | 60,123 | 46.4% |
| Households with one or more people 65 years and over | 19,945 | 15.4% |
| Average household size | 3 | 0% |
| Average family size | 3 | 0% |
Relationship in Prince William County
*Base on 2012 Data
| Population in households | 399,703 | 100% |
| Householder | 129,643 | 32.4% |
| Spouse | 77,563 | 19.4% |
| Child | 139,372 | 34.9% |
| Other relatives | 31,678 | 7.9% |
| Nonrelatives | 21,447 | 5.4% |
| Unmarried partner | 7,313 | 1.8% |
Marital Status in Prince William County
*Base on 2012 Data
| Males 15 years and over | 150,860 | 100% |
| Never married | 48,902 | 32.4% |
| Now married, except separated | 85,794 | 56.9% |
| Separated | 3,550 | 2.4% |
| Widowed | 1,985 | 1.3% |
| Divorced | 10,629 | 7.0% |
| Females 15 years and over | 155,615 | 100% |
| Never married | 42,008 | 27.0% |
| Now married, except separated | 84,447 | 54.3% |
| Separated | 5,087 | 3.3% |
| Widowed | 8,204 | 5.3% |
| Divorced | 15,869 | 10.2% |
Fertility in Prince William County
*Base on 2012 Data
| Number of women 15 to 50 years old who had a birth in the past 12 months | 7,456 | 100% |
| Unmarried women (widowed, divorced, and never married) | 1,698 | 22.8% |
| Per 1,000 unmarried women | 35 | 0% |
| Per 1,000 women 15 to 50 years old | 68 | 0% |
| Per 1,000 women 15 to 19 years old | 10 | 0% |
| Per 1,000 women 20 to 34 years old | 123 | 0% |
| Per 1,000 women 35 to 50 years old | 40 | 0% |
Grandparents in Prince William County
*Base on 2012 Data
| Number of grandparents living with own grandchildren under 18 years | 11,223 | 100% |
| Responsible for grandchildren | 3,552 | 31.6% |
| Less than 1 year | 671 | 6.0% |
| 1 or 2 years | 771 | 6.9% |
| 3 or 4 years | 661 | 5.9% |
| 5 or more years | 1,449 | 12.9% |
| Number of grandparents responsible for own grandchildren under 18 years | 3,552 | 100% |
| Who are female | 2,228 | 62.7% |
| Who are married | 2,697 | 75.9% |
School Enrollment in Prince William County
*Base on 2012 Data
| Population 3 years and over enrolled in school | 119,934 | 100% |
| Nursery school, preschool | 6,775 | 5.6% |
| Kindergarten | 6,497 | 5.4% |
| Elementary school (grades 1-8) | 51,487 | 42.9% |
| High school (grades 9-12) | 24,640 | 20.5% |
| College or graduate school | 30,535 | 25.5% |
Educational Attainment in Prince William County
*Base on 2012 Data
| Population 25 years and over | 252,907 | 100% |
| Less than 9th grade | 13,370 | 5.3% |
| 9th to 12th grade, no diploma | 14,804 | 5.9% |
| High school graduate (includes equivalency) | 54,343 | 21.5% |
| Some college, no degree | 56,496 | 22.3% |
| Associate's degree | 18,508 | 7.3% |
| Bachelor's degree | 57,387 | 22.7% |
| Graduate or professional degree | 37,999 | 15.0% |
| Percent high school graduate or higher | 0 | 88.9% |
| Percent bachelor's degree or higher | 0 | 37.7% |
Veteran Status in Prince William County
*Base on 2012 Data
| Civilian population 18 years and over | 280,367 | 100% |
| Civilian veterans | 38,940 | 13.9% |
Disability Status Of The Civilian Noninstitutionalized Population in Prince William County
*Base on 2012 Data
| Total Civilian Noninstitutionalized Population | 394,589 | 100% |
| With a disability | 26,631 | 6.7% |
| Under 18 years | 115,855 | 100% |
| With a disability | 3,241 | 2.8% |
| 18 to 64 years | 251,227 | 100% |
| With a disability | 15,025 | 6.0% |
| 65 years and over | 27,507 | 100% |
| With a disability | 8,365 | 30.4% |
Residence 1 Year Ago in Prince William County
*Base on 2012 Data
| Population 1 year and over | 397,261 | 100% |
| Same house | 337,652 | 85.0% |
| Different house in the U.S. | 56,516 | 14.2% |
| Same county | 25,007 | 6.3% |
| Different county | 31,509 | 7.9% |
| Same state | 17,278 | 4.3% |
| Different state | 14,231 | 3.6% |
| Abroad | 3,093 | 0.8% |
Place Of Birth in Prince William County
*Base on 2012 Data
| Total population | 404,011 | 100% |
| Native | 319,017 | 79.0% |
| Born in United States | 308,724 | 76.4% |
| State of residence | 138,071 | 34.2% |
| Different state | 170,653 | 42.2% |
| Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s) | 10,293 | 2.5% |
| Foreign born | 84,994 | 21.0% |
U.S. Citizenship Status in Prince William County
*Base on 2012 Data
| Foreign-born population | 84,994 | 100% |
| Naturalized U.S. citizen | 39,513 | 46.5% |
| Not a U.S. citizen | 45,481 | 53.5% |
Year of Entry in Prince William County
*Base on 2012 Data
| Population born outside the United States | 95,287 | 100% |
| Native | 10,293 | 100% |
| Entered 2010 or later | 217 | 2.1% |
| Entered before 2010 | 10,076 | 97.9% |
| Foreign born | 84,994 | 100% |
| Entered 2010 or later | 1,471 | 1.7% |
| Entered before 2010 | 83,523 | 98.3% |
World Region Of Birth Of Foreign Born in Prince William County
*Base on 2012 Data
| Foreign-born population, excluding population born at sea | 84,994 | 100% |
| Europe | 5,308 | 6.2% |
| Asia | 23,726 | 27.9% |
| Africa | 10,175 | 12.0% |
| Oceania | 97 | 0.1% |
| Latin America | 44,903 | 52.8% |
| Northern America | 785 | 0.9% |