Language Spoken At Home in Johnson County
*Base on 2012 Data
| Population 5 years and over | 507,504 | 100% |
| English only | 450,001 | 88.7% |
| Language other than English | 57,503 | 11.3% |
| Speak English less than very well | 20,936 | 4.1% |
| Spanish | 25,426 | 5.0% |
| Speak English less than very well | 11,368 | 2.2% |
| Other Indo-European languages | 14,135 | 2.8% |
| Speak English less than very well | 3,269 | 0.6% |
| Asian and Pacific Islander languages | 12,907 | 2.5% |
| Speak English less than very well | 5,168 | 1.0% |
| Other languages | 5,035 | 1.0% |
| Speak English less than very well | 1,131 | 0.2% |
Ancestry in Johnson County
*Base on 2012 Data
| Total population | 546,046 | 100% |
| American | 33,193 | 6.1% |
| Arab | 3,357 | 0.6% |
| Czech | 4,924 | 0.9% |
| Danish | 4,056 | 0.7% |
| Dutch | 9,842 | 1.8% |
| English | 70,627 | 12.9% |
| French (except Basque) | 18,125 | 3.3% |
| French Canadian | 2,049 | 0.4% |
| German | 163,000 | 29.9% |
| Greek | 1,742 | 0.3% |
| Hungarian | 1,268 | 0.2% |
| Irish | 85,120 | 15.6% |
| Italian | 21,941 | 4.0% |
| Lithuanian | 573 | 0.1% |
| Norwegian | 10,060 | 1.8% |
| Polish | 13,195 | 2.4% |
| Portuguese | 642 | 0.1% |
| Russian | 6,684 | 1.2% |
| Scotch-Irish | 8,494 | 1.6% |
| Scottish | 13,558 | 2.5% |
| Slovak | 763 | 0.1% |
| Subsaharan African | 5,844 | 1.1% |
| Swedish | 15,848 | 2.9% |
| Swiss | 3,954 | 0.7% |
| Ukrainian | 1,227 | 0.2% |
| Welsh | 5,706 | 1.0% |
| West Indian (excluding Hispanic origin groups) | 519 | 0.1% |
Households By Type in Johnson County
*Base on 2012 Data
| Total households | 214,670 | 100% |
| Family households (families) | 145,710 | 67.9% |
| With own children under 18 years | 73,819 | 34.4% |
| Married-couple family | 119,237 | 55.5% |
| With own children under 18 years | 57,310 | 26.7% |
| Male householder, no wife present, family | 7,746 | 3.6% |
| With own children under 18 years | 4,408 | 2.1% |
| Female householder, no husband present, family | 18,727 | 8.7% |
| With own children under 18 years | 12,101 | 5.6% |
| Nonfamily households | 68,960 | 32.1% |
| Householder living alone | 56,960 | 26.5% |
| 65 years and over | 17,682 | 8.2% |
| Households with one or more people under 18 years | 77,372 | 36.0% |
| Households with one or more people 65 years and over | 42,538 | 19.8% |
| Average household size | 3 | 0% |
| Average family size | 3 | 0% |
Relationship in Johnson County
*Base on 2012 Data
| Population in households | 541,459 | 100% |
| Householder | 214,670 | 39.6% |
| Spouse | 119,243 | 22.0% |
| Child | 167,060 | 30.9% |
| Other relatives | 17,402 | 3.2% |
| Nonrelatives | 23,084 | 4.3% |
| Unmarried partner | 10,026 | 1.9% |
Marital Status in Johnson County
*Base on 2012 Data
| Males 15 years and over | 205,647 | 100% |
| Never married | 56,399 | 27.4% |
| Now married, except separated | 125,621 | 61.1% |
| Separated | 2,173 | 1.1% |
| Widowed | 3,979 | 1.9% |
| Divorced | 17,475 | 8.5% |
| Females 15 years and over | 221,241 | 100% |
| Never married | 51,946 | 23.5% |
| Now married, except separated | 122,498 | 55.4% |
| Separated | 2,630 | 1.2% |
| Widowed | 15,794 | 7.1% |
| Divorced | 28,373 | 12.8% |
Fertility in Johnson County
*Base on 2012 Data
| Number of women 15 to 50 years old who had a birth in the past 12 months | 8,508 | 100% |
| Unmarried women (widowed, divorced, and never married) | 1,583 | 18.6% |
| Per 1,000 unmarried women | 26 | 0% |
| Per 1,000 women 15 to 50 years old | 62 | 0% |
| Per 1,000 women 15 to 19 years old | 8 | 0% |
| Per 1,000 women 20 to 34 years old | 117 | 0% |
| Per 1,000 women 35 to 50 years old | 31 | 0% |
Grandparents in Johnson County
*Base on 2012 Data
| Number of grandparents living with own grandchildren under 18 years | 5,937 | 100% |
| Responsible for grandchildren | 1,986 | 33.5% |
| Less than 1 year | 435 | 7.3% |
| 1 or 2 years | 698 | 11.8% |
| 3 or 4 years | 368 | 6.2% |
| 5 or more years | 485 | 8.2% |
| Number of grandparents responsible for own grandchildren under 18 years | 1,986 | 100% |
| Who are female | 1,103 | 55.5% |
| Who are married | 1,497 | 75.4% |
School Enrollment in Johnson County
*Base on 2012 Data
| Population 3 years and over enrolled in school | 150,721 | 100% |
| Nursery school, preschool | 12,440 | 8.3% |
| Kindergarten | 8,068 | 5.4% |
| Elementary school (grades 1-8) | 64,438 | 42.8% |
| High school (grades 9-12) | 30,619 | 20.3% |
| College or graduate school | 35,156 | 23.3% |
Educational Attainment in Johnson County
*Base on 2012 Data
| Population 25 years and over | 363,513 | 100% |
| Less than 9th grade | 5,928 | 1.6% |
| 9th to 12th grade, no diploma | 9,612 | 2.6% |
| High school graduate (includes equivalency) | 58,543 | 16.1% |
| Some college, no degree | 76,382 | 21.0% |
| Associate's degree | 25,598 | 7.0% |
| Bachelor's degree | 120,328 | 33.1% |
| Graduate or professional degree | 67,122 | 18.5% |
| Percent high school graduate or higher | 0 | 95.7% |
| Percent bachelor's degree or higher | 0 | 51.6% |
Veteran Status in Johnson County
*Base on 2012 Data
| Civilian population 18 years and over | 403,187 | 100% |
| Civilian veterans | 34,329 | 8.5% |
Disability Status Of The Civilian Noninstitutionalized Population in Johnson County
*Base on 2012 Data
| Total Civilian Noninstitutionalized Population | 542,294 | 100% |
| With a disability | 44,162 | 8.1% |
| Under 18 years | 142,484 | 100% |
| With a disability | 4,469 | 3.1% |
| 18 to 64 years | 341,673 | 100% |
| With a disability | 21,745 | 6.4% |
| 65 years and over | 58,137 | 100% |
| With a disability | 17,948 | 30.9% |
Residence 1 Year Ago in Johnson County
*Base on 2012 Data
| Population 1 year and over | 538,328 | 100% |
| Same house | 458,082 | 85.1% |
| Different house in the U.S. | 77,406 | 14.4% |
| Same county | 44,237 | 8.2% |
| Different county | 33,169 | 6.2% |
| Same state | 10,709 | 2.0% |
| Different state | 22,460 | 4.2% |
| Abroad | 2,840 | 0.5% |
Place Of Birth in Johnson County
*Base on 2012 Data
| Total population | 546,046 | 100% |
| Native | 501,248 | 91.8% |
| Born in United States | 497,019 | 91.0% |
| State of residence | 217,200 | 39.8% |
| Different state | 279,819 | 51.2% |
| Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s) | 4,229 | 0.8% |
| Foreign born | 44,798 | 8.2% |
U.S. Citizenship Status in Johnson County
*Base on 2012 Data
| Foreign-born population | 44,798 | 100% |
| Naturalized U.S. citizen | 18,386 | 41.0% |
| Not a U.S. citizen | 26,412 | 59.0% |
Year of Entry in Johnson County
*Base on 2012 Data
| Population born outside the United States | 49,027 | 100% |
| Native | 4,229 | 100% |
| Entered 2010 or later | 63 | 1.5% |
| Entered before 2010 | 4,166 | 98.5% |
| Foreign born | 44,798 | 100% |
| Entered 2010 or later | 1,192 | 2.7% |
| Entered before 2010 | 43,606 | 97.3% |
World Region Of Birth Of Foreign Born in Johnson County
*Base on 2012 Data
| Foreign-born population, excluding population born at sea | 44,790 | 100% |
| Europe | 4,949 | 11.0% |
| Asia | 18,645 | 41.6% |
| Africa | 4,263 | 9.5% |
| Oceania | 179 | 0.4% |
| Latin America | 15,812 | 35.3% |
| Northern America | 942 | 2.1% |