Interlaken, New York Demographics & Population 2026

A note before these figures: with a population of 493, Interlaken's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Interlaken is a small community located in New York, within Seneca County. The total population is 493. It ranks as the 1063rd most populous out of 1,289 Census-designated places in New York.

Age Demographics

The median age in Interlaken is 43.7 years. This is 10% higher than the state median of 39.8 years. 12.4% 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 is $59,028. This is 31% lower than the state median of $85,974. It is also 27% lower than the national median of $80,734. The poverty rate stands at 11.4%. This is 19% lower than the state poverty rate of 14.0%. The unemployment rate is 3.7%. This is 42% lower than the state rate of 6.4%. The median home value is $143,900. Housing costs are 66% lower than the state median of $423,800. With a home-value-to-income ratio of just 2.4x, Interlaken is one of the most affordable housing markets in the area. 64.6% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 54.4%.

Race & Ethnicity

Interlaken has a predominantly White (non-Hispanic) population, comprising 88.0% of all residents. Asian residents account for 2.0%. The White (non-Hispanic) population is significantly higher than the state average (88.0% vs 52.8%). The Black or African American population (1.6%) is well below the state average of 13.4%. The Hispanic or Latino population (1.8%) is well below the state average of 19.8%. The Asian population (2.0%) is well below the state average of 9.0%.

Education

39.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 1% lower than the state rate of 40.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.8%. Notably, 18.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Interlaken, New York is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against New York state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,289 Census-designated places in New York. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.