Language Spoken At Home in Jefferson County
*Base on 2012 Data
| Population 5 years and over | 692,605 | 100% |
| English only | 636,384 | 91.9% |
| Language other than English | 56,221 | 8.1% |
| Speak English less than very well | 25,089 | 3.6% |
| Spanish | 26,342 | 3.8% |
| Speak English less than very well | 13,843 | 2.0% |
| Other Indo-European languages | 12,973 | 1.9% |
| Speak English less than very well | 4,194 | 0.6% |
| Asian and Pacific Islander languages | 11,000 | 1.6% |
| Speak English less than very well | 4,758 | 0.7% |
| Other languages | 5,906 | 0.9% |
| Speak English less than very well | 2,294 | 0.3% |
Ancestry in Jefferson County
*Base on 2012 Data
| Total population | 741,285 | 100% |
| American | 95,622 | 12.9% |
| Arab | 4,317 | 0.6% |
| Czech | 1,300 | 0.2% |
| Danish | 796 | 0.1% |
| Dutch | 9,459 | 1.3% |
| English | 70,580 | 9.5% |
| French (except Basque) | 16,388 | 2.2% |
| French Canadian | 1,376 | 0.2% |
| German | 137,177 | 18.5% |
| Greek | 1,591 | 0.2% |
| Hungarian | 1,534 | 0.2% |
| Irish | 99,446 | 13.4% |
| Italian | 18,882 | 2.5% |
| Lithuanian | 283 | 0.0% |
| Norwegian | 2,379 | 0.3% |
| Polish | 7,712 | 1.0% |
| Portuguese | 629 | 0.1% |
| Russian | 3,306 | 0.4% |
| Scotch-Irish | 9,875 | 1.3% |
| Scottish | 12,584 | 1.7% |
| Slovak | 517 | 0.1% |
| Subsaharan African | 22,774 | 3.1% |
| Swedish | 3,240 | 0.4% |
| Swiss | 2,990 | 0.4% |
| Ukrainian | 710 | 0.1% |
| Welsh | 4,060 | 0.5% |
| West Indian (excluding Hispanic origin groups) | 1,911 | 0.3% |
Households By Type in Jefferson County
*Base on 2012 Data
| Total households | 303,915 | 100% |
| Family households (families) | 187,491 | 61.7% |
| With own children under 18 years | 83,225 | 27.4% |
| Married-couple family | 128,060 | 42.1% |
| With own children under 18 years | 49,004 | 16.1% |
| Male householder, no wife present, family | 13,157 | 4.3% |
| With own children under 18 years | 6,699 | 2.2% |
| Female householder, no husband present, family | 46,274 | 15.2% |
| With own children under 18 years | 27,522 | 9.1% |
| Nonfamily households | 116,424 | 38.3% |
| Householder living alone | 98,704 | 32.5% |
| 65 years and over | 30,708 | 10.1% |
| Households with one or more people under 18 years | 93,548 | 30.8% |
| Households with one or more people 65 years and over | 71,997 | 23.7% |
| Average household size | 2 | 0% |
| Average family size | 3 | 0% |
Relationship in Jefferson County
*Base on 2012 Data
| Population in households | 727,223 | 100% |
| Householder | 303,915 | 41.8% |
| Spouse | 127,940 | 17.6% |
| Child | 212,652 | 29.2% |
| Other relatives | 43,383 | 6.0% |
| Nonrelatives | 39,333 | 5.4% |
| Unmarried partner | 17,939 | 2.5% |
Marital Status in Jefferson County
*Base on 2012 Data
| Males 15 years and over | 284,364 | 100% |
| Never married | 102,888 | 36.2% |
| Now married, except separated | 136,162 | 47.9% |
| Separated | 5,558 | 2.0% |
| Widowed | 7,889 | 2.8% |
| Divorced | 31,867 | 11.2% |
| Females 15 years and over | 313,663 | 100% |
| Never married | 93,788 | 29.9% |
| Now married, except separated | 134,448 | 42.9% |
| Separated | 7,682 | 2.4% |
| Widowed | 31,804 | 10.1% |
| Divorced | 45,941 | 14.6% |
Fertility in Jefferson County
*Base on 2012 Data
| Number of women 15 to 50 years old who had a birth in the past 12 months | 10,244 | 100% |
| Unmarried women (widowed, divorced, and never married) | 4,733 | 46.2% |
| Per 1,000 unmarried women | 45 | 0% |
| Per 1,000 women 15 to 50 years old | 56 | 0% |
| Per 1,000 women 15 to 19 years old | 28 | 0% |
| Per 1,000 women 20 to 34 years old | 101 | 0% |
| Per 1,000 women 35 to 50 years old | 21 | 0% |
Grandparents in Jefferson County
*Base on 2012 Data
| Number of grandparents living with own grandchildren under 18 years | 15,001 | 100% |
| Responsible for grandchildren | 7,739 | 51.6% |
| Less than 1 year | 1,939 | 12.9% |
| 1 or 2 years | 1,702 | 11.3% |
| 3 or 4 years | 1,167 | 7.8% |
| 5 or more years | 2,931 | 19.5% |
| Number of grandparents responsible for own grandchildren under 18 years | 7,739 | 100% |
| Who are female | 5,072 | 65.5% |
| Who are married | 5,074 | 65.6% |
School Enrollment in Jefferson County
*Base on 2012 Data
| Population 3 years and over enrolled in school | 188,116 | 100% |
| Nursery school, preschool | 12,128 | 6.4% |
| Kindergarten | 10,190 | 5.4% |
| Elementary school (grades 1-8) | 75,271 | 40.0% |
| High school (grades 9-12) | 38,817 | 20.6% |
| College or graduate school | 51,710 | 27.5% |
Educational Attainment in Jefferson County
*Base on 2012 Data
| Population 25 years and over | 502,301 | 100% |
| Less than 9th grade | 19,048 | 3.8% |
| 9th to 12th grade, no diploma | 40,853 | 8.1% |
| High school graduate (includes equivalency) | 143,066 | 28.5% |
| Some college, no degree | 115,021 | 22.9% |
| Associate's degree | 34,561 | 6.9% |
| Bachelor's degree | 89,622 | 17.8% |
| Graduate or professional degree | 60,130 | 12.0% |
| Percent high school graduate or higher | 0 | 88.1% |
| Percent bachelor's degree or higher | 0 | 29.8% |
Veteran Status in Jefferson County
*Base on 2012 Data
| Civilian population 18 years and over | 568,320 | 100% |
| Civilian veterans | 55,788 | 9.8% |
Disability Status Of The Civilian Noninstitutionalized Population in Jefferson County
*Base on 2012 Data
| Total Civilian Noninstitutionalized Population | 732,033 | 100% |
| With a disability | 106,256 | 14.5% |
| Under 18 years | 171,211 | 100% |
| With a disability | 8,765 | 5.1% |
| 18 to 64 years | 465,108 | 100% |
| With a disability | 60,398 | 13.0% |
| 65 years and over | 95,714 | 100% |
| With a disability | 37,093 | 38.8% |
Residence 1 Year Ago in Jefferson County
*Base on 2012 Data
| Population 1 year and over | 732,191 | 100% |
| Same house | 626,410 | 85.6% |
| Different house in the U.S. | 101,986 | 13.9% |
| Same county | 71,795 | 9.8% |
| Different county | 30,191 | 4.1% |
| Same state | 11,940 | 1.6% |
| Different state | 18,251 | 2.5% |
| Abroad | 3,795 | 0.5% |
Place Of Birth in Jefferson County
*Base on 2012 Data
| Total population | 741,285 | 100% |
| Native | 694,433 | 93.7% |
| Born in United States | 689,262 | 93.0% |
| State of residence | 515,007 | 69.5% |
| Different state | 174,255 | 23.5% |
| Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s) | 5,171 | 0.7% |
| Foreign born | 46,852 | 6.3% |
U.S. Citizenship Status in Jefferson County
*Base on 2012 Data
| Foreign-born population | 46,852 | 100% |
| Naturalized U.S. citizen | 16,722 | 35.7% |
| Not a U.S. citizen | 30,130 | 64.3% |
Year of Entry in Jefferson County
*Base on 2012 Data
| Population born outside the United States | 52,023 | 100% |
| Native | 5,171 | 100% |
| Entered 2010 or later | 211 | 4.1% |
| Entered before 2010 | 4,960 | 95.9% |
| Foreign born | 46,852 | 100% |
| Entered 2010 or later | 2,267 | 4.8% |
| Entered before 2010 | 44,585 | 95.2% |
World Region Of Birth Of Foreign Born in Jefferson County
*Base on 2012 Data
| Foreign-born population, excluding population born at sea | 46,852 | 100% |
| Europe | 6,871 | 14.7% |
| Asia | 15,128 | 32.3% |
| Africa | 5,377 | 11.5% |
| Oceania | 272 | 0.6% |
| Latin America | 18,531 | 39.6% |
| Northern America | 673 | 1.4% |