Language Spoken At Home in New Castle County
*Base on 2012 Data
| Population 5 years and over | 506,250 | 100% |
| English only | 433,344 | 85.6% |
| Language other than English | 72,906 | 14.4% |
| Speak English less than very well | 24,821 | 4.9% |
| Spanish | 36,870 | 7.3% |
| Speak English less than very well | 15,517 | 3.1% |
| Other Indo-European languages | 18,654 | 3.7% |
| Speak English less than very well | 4,371 | 0.9% |
| Asian and Pacific Islander languages | 12,765 | 2.5% |
| Speak English less than very well | 4,319 | 0.9% |
| Other languages | 4,617 | 0.9% |
| Speak English less than very well | 614 | 0.1% |
Ancestry in New Castle County
*Base on 2012 Data
| Total population | 539,665 | 100% |
| American | 17,327 | 3.2% |
| Arab | 1,985 | 0.4% |
| Czech | 1,323 | 0.2% |
| Danish | 1,038 | 0.2% |
| Dutch | 7,167 | 1.3% |
| English | 56,568 | 10.5% |
| French (except Basque) | 10,418 | 1.9% |
| French Canadian | 1,837 | 0.3% |
| German | 80,385 | 14.9% |
| Greek | 3,102 | 0.6% |
| Hungarian | 2,440 | 0.5% |
| Irish | 103,164 | 19.1% |
| Italian | 63,879 | 11.8% |
| Lithuanian | 2,056 | 0.4% |
| Norwegian | 2,324 | 0.4% |
| Polish | 31,607 | 5.9% |
| Portuguese | 1,011 | 0.2% |
| Russian | 5,731 | 1.1% |
| Scotch-Irish | 5,118 | 0.9% |
| Scottish | 9,861 | 1.8% |
| Slovak | 1,281 | 0.2% |
| Subsaharan African | 6,745 | 1.2% |
| Swedish | 4,227 | 0.8% |
| Swiss | 1,032 | 0.2% |
| Ukrainian | 3,841 | 0.7% |
| Welsh | 5,403 | 1.0% |
| West Indian (excluding Hispanic origin groups) | 6,136 | 1.1% |
Households By Type in New Castle County
*Base on 2012 Data
| Total households | 200,618 | 100% |
| Family households (families) | 134,499 | 67.0% |
| With own children under 18 years | 61,089 | 30.5% |
| Married-couple family | 96,197 | 48.0% |
| With own children under 18 years | 40,124 | 20.0% |
| Male householder, no wife present, family | 9,629 | 4.8% |
| With own children under 18 years | 4,915 | 2.4% |
| Female householder, no husband present, family | 28,673 | 14.3% |
| With own children under 18 years | 16,050 | 8.0% |
| Nonfamily households | 66,119 | 33.0% |
| Householder living alone | 53,104 | 26.5% |
| 65 years and over | 18,591 | 9.3% |
| Households with one or more people under 18 years | 69,004 | 34.4% |
| Households with one or more people 65 years and over | 47,474 | 23.7% |
| Average household size | 3 | 0% |
| Average family size | 3 | 0% |
Relationship in New Castle County
*Base on 2012 Data
| Population in households | 522,962 | 100% |
| Householder | 200,618 | 38.4% |
| Spouse | 96,210 | 18.4% |
| Child | 159,134 | 30.4% |
| Other relatives | 35,593 | 6.8% |
| Nonrelatives | 31,407 | 6.0% |
| Unmarried partner | 13,013 | 2.5% |
Marital Status in New Castle County
*Base on 2012 Data
| Males 15 years and over | 209,251 | 100% |
| Never married | 78,095 | 37.3% |
| Now married, except separated | 103,726 | 49.6% |
| Separated | 3,781 | 1.8% |
| Widowed | 5,607 | 2.7% |
| Divorced | 18,042 | 8.6% |
| Females 15 years and over | 227,951 | 100% |
| Never married | 74,895 | 32.9% |
| Now married, except separated | 101,849 | 44.7% |
| Separated | 4,434 | 1.9% |
| Widowed | 19,184 | 8.4% |
| Divorced | 27,589 | 12.1% |
Fertility in New Castle County
*Base on 2012 Data
| Number of women 15 to 50 years old who had a birth in the past 12 months | 7,125 | 100% |
| Unmarried women (widowed, divorced, and never married) | 2,825 | 39.6% |
| Per 1,000 unmarried women | 35 | 0% |
| Per 1,000 women 15 to 50 years old | 51 | 0% |
| Per 1,000 women 15 to 19 years old | 12 | 0% |
| Per 1,000 women 20 to 34 years old | 93 | 0% |
| Per 1,000 women 35 to 50 years old | 25 | 0% |
Grandparents in New Castle County
*Base on 2012 Data
| Number of grandparents living with own grandchildren under 18 years | 13,288 | 100% |
| Responsible for grandchildren | 5,247 | 39.5% |
| Less than 1 year | 958 | 7.2% |
| 1 or 2 years | 1,373 | 10.3% |
| 3 or 4 years | 762 | 5.7% |
| 5 or more years | 2,154 | 16.2% |
| Number of grandparents responsible for own grandchildren under 18 years | 5,247 | 100% |
| Who are female | 3,233 | 61.6% |
| Who are married | 3,569 | 68.0% |
School Enrollment in New Castle County
*Base on 2012 Data
| Population 3 years and over enrolled in school | 150,510 | 100% |
| Nursery school, preschool | 9,741 | 6.5% |
| Kindergarten | 6,943 | 4.6% |
| Elementary school (grades 1-8) | 55,263 | 36.7% |
| High school (grades 9-12) | 30,315 | 20.1% |
| College or graduate school | 48,248 | 32.1% |
Educational Attainment in New Castle County
*Base on 2012 Data
| Population 25 years and over | 356,060 | 100% |
| Less than 9th grade | 12,609 | 3.5% |
| 9th to 12th grade, no diploma | 25,719 | 7.2% |
| High school graduate (includes equivalency) | 102,958 | 28.9% |
| Some college, no degree | 70,799 | 19.9% |
| Associate's degree | 24,662 | 6.9% |
| Bachelor's degree | 71,074 | 20.0% |
| Graduate or professional degree | 48,239 | 13.5% |
| Percent high school graduate or higher | 0 | 89.2% |
| Percent bachelor's degree or higher | 0 | 33.5% |
Veteran Status in New Castle County
*Base on 2012 Data
| Civilian population 18 years and over | 414,293 | 100% |
| Civilian veterans | 37,481 | 9.0% |
Disability Status Of The Civilian Noninstitutionalized Population in New Castle County
*Base on 2012 Data
| Total Civilian Noninstitutionalized Population | 531,282 | 100% |
| With a disability | 59,447 | 11.2% |
| Under 18 years | 124,644 | 100% |
| With a disability | 5,437 | 4.4% |
| 18 to 64 years | 342,025 | 100% |
| With a disability | 32,217 | 9.4% |
| 65 years and over | 64,613 | 100% |
| With a disability | 21,793 | 33.7% |
Residence 1 Year Ago in New Castle County
*Base on 2012 Data
| Population 1 year and over | 533,082 | 100% |
| Same house | 453,495 | 85.1% |
| Different house in the U.S. | 76,493 | 14.3% |
| Same county | 51,366 | 9.6% |
| Different county | 25,127 | 4.7% |
| Same state | 3,046 | 0.6% |
| Different state | 22,081 | 4.1% |
| Abroad | 3,094 | 0.6% |
Place Of Birth in New Castle County
*Base on 2012 Data
| Total population | 539,665 | 100% |
| Native | 485,718 | 90.0% |
| Born in United States | 476,892 | 88.4% |
| State of residence | 251,731 | 46.6% |
| Different state | 225,161 | 41.7% |
| Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s) | 8,826 | 1.6% |
| Foreign born | 53,947 | 10.0% |
U.S. Citizenship Status in New Castle County
*Base on 2012 Data
| Foreign-born population | 53,947 | 100% |
| Naturalized U.S. citizen | 23,378 | 43.3% |
| Not a U.S. citizen | 30,569 | 56.7% |
Year of Entry in New Castle County
*Base on 2012 Data
| Population born outside the United States | 62,773 | 100% |
| Native | 8,826 | 100% |
| Entered 2010 or later | 278 | 3.1% |
| Entered before 2010 | 8,548 | 96.9% |
| Foreign born | 53,947 | 100% |
| Entered 2010 or later | 2,228 | 4.1% |
| Entered before 2010 | 51,719 | 95.9% |
World Region Of Birth Of Foreign Born in New Castle County
*Base on 2012 Data
| Foreign-born population, excluding population born at sea | 53,947 | 100% |
| Europe | 6,827 | 12.7% |
| Asia | 18,772 | 34.8% |
| Africa | 6,077 | 11.3% |
| Oceania | 57 | 0.1% |
| Latin America | 21,281 | 39.4% |
| Northern America | 933 | 1.7% |