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.

Demographics

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

Population by Race

Race	Population	Percentage (of total)
White	504	89.05%
Two or more races	56	9.89%
Asian	6	1.06%

Mountain Lake Marital Status

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