Mountain Lake Flag

Mountain Lake

County:
Warren County
County Seat:
No
Area (mi²):
1.126
State:
New Jersey

Mountain Lake is a CDP located in Warren County, New Jersey. Mountain Lake has a 2025 population of 535 . Mountain Lake is currently declining at a rate of -0.56% annually and its population has decreased by -5.31% since the most recent census, which recorded a population of 565 in 2020.

The average household income in Mountain Lake is $124,912 with a poverty rate of 6.18%. The median age in Mountain Lake is 56.1 years: 57.4 years for males, and 55.4 years for females. For every 100 females there are 82.6 males.

535
Total Population
475
Density (mi²)
-3 -0.56%
Growth

Mountain Lake Population

Mountain Lake Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Mountain Lake includes 89.05% White, and smaller percentages for Asian and multiracial populations.

Population by Race

White (89.05%)

Two or more races (9.89%)

Asian (1.06%)

Race
Population
Percentage (of total)
White50489.05%
Two or more races569.89%
Asian61.06%

Mountain Lake Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mountain Lake's average per capita income is $55,461. Household income levels show a median of $99,063. The poverty rate stands at 6.18%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$113,750-
Families$101,667$142,267
Households$99,063$124,912
Non Families$75,893$85,112

$55,461

Average Income

$99,063

Median Household Income

6.18%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)