Interlaken Flag

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.

813
Total Population
2,454
Density (mi²)
-2 -0.25%
Growth

Interlaken Population

Interlaken Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Interlaken includes 95.49% White, and smaller percentages for Asian and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White78495.49%
Two or more races303.65%
Asian70.85%

Interlaken Marital Status

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

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

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)