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Language Spoken At Home in Mountain Lakes Borough
*Base on 2012 Data
| Population 5 years and over | 4,116 | 100% |
| English only | 3,540 | 86.0% |
| Language other than English | 576 | 14.0% |
| Speak English less than very well | 137 | 3.3% |
| Spanish | 38 | 0.9% |
| Speak English less than very well | 8 | 0.2% |
| Other Indo-European languages | 354 | 8.6% |
| Speak English less than very well | 68 | 1.7% |
| Asian and Pacific Islander languages | 184 | 4.5% |
| Speak English less than very well | 61 | 1.5% |
| Other languages | 0 | 0.0% |
| Speak English less than very well | 0 | 0.0% |
Ancestry in Mountain Lakes Borough
*Base on 2012 Data
| Total population | 4,206 | 100% |
| American | 294 | 7.0% |
| Arab | 0 | 0.0% |
| Czech | 22 | 0.5% |
| Danish | 20 | 0.5% |
| Dutch | 55 | 1.3% |
| English | 592 | 14.1% |
| French (except Basque) | 96 | 2.3% |
| French Canadian | 0 | 0.0% |
| German | 541 | 12.9% |
| Greek | 26 | 0.6% |
| Hungarian | 34 | 0.8% |
| Irish | 787 | 18.7% |
| Italian | 818 | 19.4% |
| Lithuanian | 20 | 0.5% |
| Norwegian | 74 | 1.8% |
| Polish | 277 | 6.6% |
| Portuguese | 17 | 0.4% |
| Russian | 278 | 6.6% |
| Scotch-Irish | 41 | 1.0% |
| Scottish | 81 | 1.9% |
| Slovak | 23 | 0.5% |
| Subsaharan African | 0 | 0.0% |
| Swedish | 104 | 2.5% |
| Swiss | 0 | 0.0% |
| Ukrainian | 64 | 1.5% |
| Welsh | 40 | 1.0% |
| West Indian (excluding Hispanic origin groups) | 0 | 0.0% |
Households By Type in Mountain Lakes Borough
*Base on 2012 Data
| Total households | 1,298 | 100% |
| Family households (families) | 1,167 | 89.9% |
| With own children under 18 years | 643 | 49.5% |
| Married-couple family | 1,078 | 83.1% |
| With own children under 18 years | 601 | 46.3% |
| Male householder, no wife present, family | 54 | 4.2% |
| With own children under 18 years | 23 | 1.8% |
| Female householder, no husband present, family | 35 | 2.7% |
| With own children under 18 years | 19 | 1.5% |
| Nonfamily households | 131 | 10.1% |
| Householder living alone | 118 | 9.1% |
| 65 years and over | 75 | 5.8% |
| Households with one or more people under 18 years | 649 | 50.0% |
| Households with one or more people 65 years and over | 401 | 30.9% |
| Average household size | 3 | 0% |
| Average family size | 3 | 0% |
Relationship in Mountain Lakes Borough
*Base on 2012 Data
| Population in households | 4,206 | 100% |
| Householder | 1,298 | 30.9% |
| Spouse | 1,080 | 25.7% |
| Child | 1,702 | 40.5% |
| Other relatives | 93 | 2.2% |
| Nonrelatives | 33 | 0.8% |
| Unmarried partner | 9 | 0.2% |
Marital Status in Mountain Lakes Borough
*Base on 2012 Data
| Males 15 years and over | 1,671 | 100% |
| Never married | 459 | 27.5% |
| Now married, except separated | 1,107 | 66.2% |
| Separated | 0 | 0.0% |
| Widowed | 52 | 3.1% |
| Divorced | 53 | 3.2% |
| Females 15 years and over | 1,634 | 100% |
| Never married | 411 | 25.2% |
| Now married, except separated | 1,120 | 68.5% |
| Separated | 0 | 0.0% |
| Widowed | 62 | 3.8% |
| Divorced | 41 | 2.5% |
Fertility in Mountain Lakes Borough
*Base on 2012 Data
| Number of women 15 to 50 years old who had a birth in the past 12 months | 0 | 0% |
| Unmarried women (widowed, divorced, and never married) | 0 | 0% |
| Per 1,000 unmarried women | 0 | 0% |
| Per 1,000 women 15 to 50 years old | 0 | 0% |
| Per 1,000 women 15 to 19 years old | 0 | 0% |
| Per 1,000 women 20 to 34 years old | 0 | 0% |
| Per 1,000 women 35 to 50 years old | 0 | 0% |
Grandparents in Mountain Lakes Borough
*Base on 2012 Data
| Number of grandparents living with own grandchildren under 18 years | 40 | 100% |
| Responsible for grandchildren | 34 | 85.0% |
| Less than 1 year | 0 | 0.0% |
| 1 or 2 years | 0 | 0.0% |
| 3 or 4 years | 0 | 0.0% |
| 5 or more years | 34 | 85.0% |
| Number of grandparents responsible for own grandchildren under 18 years | 34 | 100% |
| Who are female | 17 | 50.0% |
| Who are married | 34 | 100.0% |
School Enrollment in Mountain Lakes Borough
*Base on 2012 Data
| Population 3 years and over enrolled in school | 1,555 | 100% |
| Nursery school, preschool | 80 | 5.1% |
| Kindergarten | 78 | 5.0% |
| Elementary school (grades 1-8) | 689 | 44.3% |
| High school (grades 9-12) | 446 | 28.7% |
| College or graduate school | 262 | 16.8% |
Educational Attainment in Mountain Lakes Borough
*Base on 2012 Data
| Population 25 years and over | 2,553 | 100% |
| Less than 9th grade | 8 | 0.3% |
| 9th to 12th grade, no diploma | 8 | 0.3% |
| High school graduate (includes equivalency) | 101 | 4.0% |
| Some college, no degree | 160 | 6.3% |
| Associate's degree | 72 | 2.8% |
| Bachelor's degree | 1,219 | 47.7% |
| Graduate or professional degree | 985 | 38.6% |
| Percent high school graduate or higher | 0 | 99.4% |
| Percent bachelor's degree or higher | 0 | 86.3% |
Veteran Status in Mountain Lakes Borough
*Base on 2012 Data
| Civilian population 18 years and over | 2,868 | 100% |
| Civilian veterans | 226 | 7.9% |
Disability Status Of The Civilian Noninstitutionalized Population in Mountain Lakes Borough
*Base on 2012 Data
| Total Civilian Noninstitutionalized Population | 4,206 | 100% |
| With a disability | 65 | 1.5% |
| Under 18 years | 1,338 | 100% |
| With a disability | 0 | 0.0% |
| 18 to 64 years | 2,241 | 100% |
| With a disability | 15 | 0.7% |
| 65 years and over | 627 | 100% |
| With a disability | 50 | 8.0% |
Residence 1 Year Ago in Mountain Lakes Borough
*Base on 2012 Data
| Population 1 year and over | 4,206 | 100% |
| Same house | 3,906 | 92.9% |
| Different house in the U.S. | 264 | 6.3% |
| Same county | 239 | 5.7% |
| Different county | 25 | 0.6% |
| Same state | 0 | 0.0% |
| Different state | 25 | 0.6% |
| Abroad | 36 | 0.9% |
Place Of Birth in Mountain Lakes Borough
*Base on 2012 Data
| Total population | 4,206 | 100% |
| Native | 3,715 | 88.3% |
| Born in United States | 3,684 | 87.6% |
| State of residence | 2,166 | 51.5% |
| Different state | 1,518 | 36.1% |
| Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s) | 31 | 0.7% |
| Foreign born | 491 | 11.7% |
U.S. Citizenship Status in Mountain Lakes Borough
*Base on 2012 Data
| Foreign-born population | 491 | 100% |
| Naturalized U.S. citizen | 357 | 72.7% |
| Not a U.S. citizen | 134 | 27.3% |
Year of Entry in Mountain Lakes Borough
*Base on 2012 Data
| Population born outside the United States | 522 | 100% |
| Native | 31 | 100% |
| Entered 2010 or later | 0 | 0.0% |
| Entered before 2010 | 31 | 100.0% |
| Foreign born | 491 | 100% |
| Entered 2010 or later | 9 | 1.8% |
| Entered before 2010 | 482 | 98.2% |
World Region Of Birth Of Foreign Born in Mountain Lakes Borough
*Base on 2012 Data
| Foreign-born population, excluding population born at sea | 491 | 100% |
| Europe | 186 | 37.9% |
| Asia | 256 | 52.1% |
| Africa | 0 | 0.0% |
| Oceania | 9 | 1.8% |
| Latin America | 40 | 8.1% |
| Northern America | 0 | 0.0% |