Interlaken borough, New Jersey Demographics & Population 2026
As of 2026, Interlaken borough, New Jersey has a total population of 821, the 574th largest city in New Jersey, with a median household income of $180,972, which is 79% higher than the state average. The poverty rate is 3.4%.
Key Takeaways
- Household income is 79% above the state average — one of the wealthiest communities in New Jersey.
- An exceptionally low poverty rate of 3.4% — among the lowest in New Jersey.
Interlaken borough Quick Facts
How Interlaken borough Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 65 | National average: 60
Education
Educational Attainment (Adults 25+)
Interlaken borough Rankings in New Jersey
Explore New Jersey Rankings
Other Cities in Monmouth County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Long Branch city | 32,184 | $73,381 | 16.2% | $519,000 |
| Tinton Falls borough | 19,252 | $113,844 | 8.6% | $458,300 |
| Asbury Park city | 15,239 | $71,080 | 18.8% | $508,800 |
| Eatontown borough | 13,537 | $90,174 | 5.8% | $454,300 |
| Red Bank borough | 12,864 | $101,738 | 8.9% | $477,000 |
| Freehold borough | 12,504 | $82,183 | 14.3% | $401,900 |
| Keansburg borough | 9,729 | $87,484 | 11.4% | $274,500 |
| Matawan borough | 9,636 | $122,026 | 10.1% | $447,000 |
| West Long Branch borough | 8,576 | $123,661 | 2.8% | $631,300 |
| Rumson borough | 7,265 | $250,001 | 3.2% | $1,609,400 |
Cities Similar to Interlaken borough
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| New Vernon CDP | 791 | N/A | $1,606,500 | 75.0% | 11.6% |
| Richland CDP | 859 | $152,525 | $235,600 | 18.2% | 3.7% |
| Oceanville CDP | 721 | $163,459 | $247,600 | 26.8% | 0.0% |
| Rocky Hill borough | 814 | $127,344 | $608,200 | 72.5% | 4.3% |
| Griggstown CDP | 928 | $207,542 | $560,100 | 49.1% | 0.2% |
Population Overview
Interlaken borough is a small community located in New Jersey, within Monmouth County. The total population is 821. It ranks as the 574th most populous out of 700 cities and towns in New Jersey.
Age Demographics
The median age in Interlaken borough is 57.0 years. This is 42% higher than the state median of 40.1 years. 11.7% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Interlaken borough is $180,972. This is 79% higher than the state median of $101,050. Compared to the national median of $78,538, household income here is 130% higher. The poverty rate stands at 3.4%. This is 65% lower than the state poverty rate of 9.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.5%. This is 44% lower than the state rate of 6.2%. The median home value is $935,600. Housing costs are 119% higher than the state median of $427,600. The home-value-to-income ratio is 5.2x. 93.4% of occupied housing units are owner-occupied. This homeownership rate is 47% higher than the state average of 63.7%.
Race & Ethnicity
Interlaken borough has a predominantly White (non-Hispanic) population, comprising 95.1% of all residents. Hispanic or Latino residents account for 2.8%. The White (non-Hispanic) population is significantly higher than the state average (95.1% vs 51.9%). The Hispanic or Latino population (2.8%) is well below the state average of 21.9%. The Asian population (0.9%) is well below the state average of 9.8%.
Education
67.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 58% higher than the state rate of 42.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.0%. Notably, 26.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Interlaken borough, New Jersey is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against New Jersey state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 700 Census-designated places in New Jersey. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Interlaken borough, New Jersey?
Interlaken borough, New Jersey has a population of 821 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Interlaken borough, NJ?
The median household income in Interlaken borough is $180,972, which is 130% higher the national median of $78,538.
What is the poverty rate in Interlaken borough, NJ?
The poverty rate in Interlaken borough is 3.4%. This means approximately 28 residents live below the federal poverty line.
What is the racial makeup of Interlaken borough, New Jersey?
Interlaken borough's population is 95.1% White, 0.0% Black, 2.8% Hispanic/Latino, and 0.9% Asian.
What is the median home value in Interlaken borough, NJ?
The median home value in Interlaken borough is $935,600. The home-value-to-income ratio is 5.2x.
How educated is Interlaken borough, New Jersey?
67.7% of adults (25+) in Interlaken borough hold a bachelor's degree or higher, and 26.5% hold a graduate or professional degree.