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, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	504	89.05%
Two or more races	56	9.89%
Asian	6	1.06%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

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