Interlaken

County:: Monmouth County
County Seat:: No
Area (mi²):: 0.331
State:: New Jersey

Interlaken is a borough located in Monmouth County, New Jersey. Interlaken has a 2025 population of 813. Interlaken is currently declining at a rate of -0.25% annually and its population has decreased by -1.22% since the most recent census, which recorded a population of 823 in 2020.

The average household income in Interlaken is $217,896 with a poverty rate of 3.41%. The median age in Interlaken is 57 years: 57.1 years for males, and 55.3 years for females.

Demographics

The racial composition of Interlaken includes 95.49% 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	784	95.49%
Two or more races	30	3.65%
Asian	7	0.85%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Interlaken Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Interlaken's average per capita income is $96,944. Household income levels show a median of $180,972. The poverty rate stands at 3.41%.

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	$211,979	-
Families	$210,208	$250,384
Households	$180,972	$217,896
Non Families	$111,875	$138,672

$96,944

Average Income

$180,972

Median Household Income

3.41%

Poverty Rate