Thousand Island Park, New York Demographics & Population 2026

A note before these figures: with a population of 222, Thousand Island Park'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

Thousand Island Park is a small community located in New York, within Jefferson County. The total population is 222. It ranks as the 1200th most populous out of 1,289 Census-designated places in New York.

Age Demographics

The median age in Thousand Island Park is 60.1 years. This is 51% higher than the state median of 39.8 years. Only 9.9% of residents are under 18, indicating fewer families with children. 26.6% 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 Thousand Island Park is $190,250. This is 121% higher than the state median of $85,974. It is also 136% higher than the national median of $80,734. The ACS records no residents below the poverty line in Thousand Island Park. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The unemployment rate is 11.7%. This is 83% higher than the state rate of 6.4%. The median home value is $376,600. Housing costs are 11% lower than the state median of $423,800. With a home-value-to-income ratio of just 2.0x, Thousand Island Park is one of the most affordable housing markets in the area. 92.9% of occupied housing units are owner-occupied. This homeownership rate is 71% higher than the state average of 54.4%.

Race & Ethnicity

Every resident counted in Thousand Island Park was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

65.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 62% higher than the state rate of 40.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample. Notably, 54.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Thousand Island Park, 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.