Island Park, Idaho Demographics & Population 2026

A note before these figures: with a population of 170, 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

Island Park is a small community located in Idaho, within Fremont County. The total population is 170. It ranks as the 198th most populous out of 232 Census-designated places in Idaho.

Age Demographics

The median age in Island Park is 67.1 years. This is 80% higher than the state median of 37.3 years. Only 6.5% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Island Park is $91,250. This is 17% higher than the state median of $77,800. It is also 13% higher than the national median of $80,734. The poverty rate stands at 1.2%. This is 89% lower than the state poverty rate of 10.6%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The survey records no unemployed residents in Island Park, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $293,800. Housing costs are 30% lower than the state median of $418,600. The home-value-to-income ratio is 3.2x. 90.7% of occupied housing units are owner-occupied. This homeownership rate is 26% higher than the state average of 72.1%.

Race & Ethnicity

Island Park has a predominantly White (non-Hispanic) population, comprising 92.3% of all residents. Hispanic or Latino residents account for 2.9%. The Hispanic or Latino population (2.9%) is well below the state average of 13.7%.

Education

38.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 21% higher than the state rate of 31.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.2%. Notably, 15.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Island Park, Idaho 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 Idaho state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 232 Census-designated places in Idaho. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.