Language Spoken At Home in Nassau County
*Base on 2012 Data
| Population 5 years and over | 1,265,386 | 100% |
| English only | 909,804 | 71.9% |
| Language other than English | 355,582 | 28.1% |
| Speak English less than very well | 139,022 | 11.0% |
| Spanish | 152,768 | 12.1% |
| Speak English less than very well | 72,286 | 5.7% |
| Other Indo-European languages | 134,199 | 10.6% |
| Speak English less than very well | 40,587 | 3.2% |
| Asian and Pacific Islander languages | 52,456 | 4.1% |
| Speak English less than very well | 23,258 | 1.8% |
| Other languages | 16,159 | 1.3% |
| Speak English less than very well | 2,891 | 0.2% |
Ancestry in Nassau County
*Base on 2012 Data
| Total population | 1,338,712 | 100% |
| American | 51,094 | 3.8% |
| Arab | 7,349 | 0.5% |
| Czech | 4,719 | 0.4% |
| Danish | 2,066 | 0.2% |
| Dutch | 5,056 | 0.4% |
| English | 41,524 | 3.1% |
| French (except Basque) | 14,239 | 1.1% |
| French Canadian | 2,972 | 0.2% |
| German | 137,517 | 10.3% |
| Greek | 21,815 | 1.6% |
| Hungarian | 12,083 | 0.9% |
| Irish | 222,225 | 16.6% |
| Italian | 295,611 | 22.1% |
| Lithuanian | 3,792 | 0.3% |
| Norwegian | 5,375 | 0.4% |
| Polish | 69,972 | 5.2% |
| Portuguese | 7,364 | 0.6% |
| Russian | 55,773 | 4.2% |
| Scotch-Irish | 3,555 | 0.3% |
| Scottish | 7,775 | 0.6% |
| Slovak | 1,411 | 0.1% |
| Subsaharan African | 6,374 | 0.5% |
| Swedish | 7,141 | 0.5% |
| Swiss | 2,213 | 0.2% |
| Ukrainian | 5,834 | 0.4% |
| Welsh | 1,761 | 0.1% |
| West Indian (excluding Hispanic origin groups) | 56,037 | 4.2% |
Households By Type in Nassau County
*Base on 2012 Data
| Total households | 442,869 | 100% |
| Family households (families) | 340,577 | 76.9% |
| With own children under 18 years | 150,924 | 34.1% |
| Married-couple family | 271,101 | 61.2% |
| With own children under 18 years | 123,488 | 27.9% |
| Male householder, no wife present, family | 18,094 | 4.1% |
| With own children under 18 years | 6,456 | 1.5% |
| Female householder, no husband present, family | 51,382 | 11.6% |
| With own children under 18 years | 20,980 | 4.7% |
| Nonfamily households | 102,292 | 23.1% |
| Householder living alone | 87,761 | 19.8% |
| 65 years and over | 45,026 | 10.2% |
| Households with one or more people under 18 years | 164,015 | 37.0% |
| Households with one or more people 65 years and over | 142,001 | 32.1% |
| Average household size | 3 | 0% |
| Average family size | 3 | 0% |
Relationship in Nassau County
*Base on 2012 Data
| Population in households | 1,316,572 | 100% |
| Householder | 442,869 | 33.6% |
| Spouse | 271,068 | 20.6% |
| Child | 450,148 | 34.2% |
| Other relatives | 107,984 | 8.2% |
| Nonrelatives | 44,503 | 3.4% |
| Unmarried partner | 15,850 | 1.2% |
Marital Status in Nassau County
*Base on 2012 Data
| Males 15 years and over | 520,302 | 100% |
| Never married | 175,998 | 33.8% |
| Now married, except separated | 298,374 | 57.3% |
| Separated | 6,273 | 1.2% |
| Widowed | 14,685 | 2.8% |
| Divorced | 24,972 | 4.8% |
| Females 15 years and over | 569,310 | 100% |
| Never married | 158,644 | 27.9% |
| Now married, except separated | 293,350 | 51.5% |
| Separated | 11,472 | 2.0% |
| Widowed | 59,506 | 10.5% |
| Divorced | 46,338 | 8.1% |
Fertility in Nassau County
*Base on 2012 Data
| Number of women 15 to 50 years old who had a birth in the past 12 months | 14,276 | 100% |
| Unmarried women (widowed, divorced, and never married) | 2,310 | 16.2% |
| Per 1,000 unmarried women | 15 | 0% |
| Per 1,000 women 15 to 50 years old | 45 | 0% |
| Per 1,000 women 15 to 19 years old | 6 | 0% |
| Per 1,000 women 20 to 34 years old | 81 | 0% |
| Per 1,000 women 35 to 50 years old | 32 | 0% |
Grandparents in Nassau County
*Base on 2012 Data
| Number of grandparents living with own grandchildren under 18 years | 32,657 | 100% |
| Responsible for grandchildren | 5,740 | 17.6% |
| Less than 1 year | 932 | 2.9% |
| 1 or 2 years | 1,190 | 3.6% |
| 3 or 4 years | 940 | 2.9% |
| 5 or more years | 2,678 | 8.2% |
| Number of grandparents responsible for own grandchildren under 18 years | 5,740 | 100% |
| Who are female | 3,731 | 65.0% |
| Who are married | 4,022 | 70.1% |
School Enrollment in Nassau County
*Base on 2012 Data
| Population 3 years and over enrolled in school | 358,000 | 100% |
| Nursery school, preschool | 24,290 | 6.8% |
| Kindergarten | 16,193 | 4.5% |
| Elementary school (grades 1-8) | 138,843 | 38.8% |
| High school (grades 9-12) | 80,329 | 22.4% |
| College or graduate school | 98,345 | 27.5% |
Educational Attainment in Nassau County
*Base on 2012 Data
| Population 25 years and over | 915,334 | 100% |
| Less than 9th grade | 44,790 | 4.9% |
| 9th to 12th grade, no diploma | 45,485 | 5.0% |
| High school graduate (includes equivalency) | 227,834 | 24.9% |
| Some college, no degree | 146,697 | 16.0% |
| Associate's degree | 71,504 | 7.8% |
| Bachelor's degree | 209,348 | 22.9% |
| Graduate or professional degree | 169,676 | 18.5% |
| Percent high school graduate or higher | 0 | 90.1% |
| Percent bachelor's degree or higher | 0 | 41.4% |
Veteran Status in Nassau County
*Base on 2012 Data
| Civilian population 18 years and over | 1,028,902 | 100% |
| Civilian veterans | 65,613 | 6.4% |
Disability Status Of The Civilian Noninstitutionalized Population in Nassau County
*Base on 2012 Data
| Total Civilian Noninstitutionalized Population | 1,328,101 | 100% |
| With a disability | 114,200 | 8.6% |
| Under 18 years | 309,095 | 100% |
| With a disability | 8,321 | 2.7% |
| 18 to 64 years | 819,197 | 100% |
| With a disability | 46,658 | 5.7% |
| 65 years and over | 199,809 | 100% |
| With a disability | 59,221 | 29.6% |
Residence 1 Year Ago in Nassau County
*Base on 2012 Data
| Population 1 year and over | 1,325,327 | 100% |
| Same house | 1,236,444 | 93.3% |
| Different house in the U.S. | 82,761 | 6.2% |
| Same county | 50,042 | 3.8% |
| Different county | 32,719 | 2.5% |
| Same state | 23,367 | 1.8% |
| Different state | 9,352 | 0.7% |
| Abroad | 6,122 | 0.5% |
Place Of Birth in Nassau County
*Base on 2012 Data
| Total population | 1,338,712 | 100% |
| Native | 1,054,504 | 78.8% |
| Born in United States | 1,038,603 | 77.6% |
| State of residence | 957,357 | 71.5% |
| Different state | 81,246 | 6.1% |
| Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s) | 15,901 | 1.2% |
| Foreign born | 284,208 | 21.2% |
U.S. Citizenship Status in Nassau County
*Base on 2012 Data
| Foreign-born population | 284,208 | 100% |
| Naturalized U.S. citizen | 174,788 | 61.5% |
| Not a U.S. citizen | 109,420 | 38.5% |
Year of Entry in Nassau County
*Base on 2012 Data
| Population born outside the United States | 300,109 | 100% |
| Native | 15,901 | 100% |
| Entered 2010 or later | 324 | 2.0% |
| Entered before 2010 | 15,577 | 98.0% |
| Foreign born | 284,208 | 100% |
| Entered 2010 or later | 4,705 | 1.7% |
| Entered before 2010 | 279,503 | 98.3% |
World Region Of Birth Of Foreign Born in Nassau County
*Base on 2012 Data
| Foreign-born population, excluding population born at sea | 284,208 | 100% |
| Europe | 50,763 | 17.9% |
| Asia | 84,610 | 29.8% |
| Africa | 5,721 | 2.0% |
| Oceania | 241 | 0.1% |
| Latin America | 140,840 | 49.6% |
| Northern America | 2,033 | 0.7% |