Herron Island, Washington Demographics & Population 2026

A note before these figures: with a population of 119, Herron Island'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

Herron Island is a small community located in Washington, within Pierce County. The total population is 119. It ranks as the 592nd most populous out of 628 Census-designated places in Washington.

Age Demographics

The median age in Herron Island is 69.3 years. This is 81% higher than the state median of 38.3 years. 18.5% 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 Herron Island is $86,429. This is 12% lower than the state median of $98,141. It is also 7% higher than the national median of $80,734. The ACS records no residents below the poverty line in Herron Island. 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 survey records no unemployed residents in Herron Island, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $492,900. Housing costs are 13% lower than the state median of $564,600. The home-value-to-income ratio is 5.7x. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 57% higher than the state average of 63.8%.

Race & Ethnicity

The largest racial or ethnic group in Herron Island is White (non-Hispanic), making up 71.4% of the population. Hispanic or Latino residents account for 28.6%. The Hispanic or Latino population is significantly higher than the state average (28.6% vs 14.4%).

Education

51.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 30% higher than the state rate of 39.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 85.8%. Notably, 19.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Herron Island, Washington 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 Washington state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 628 Census-designated places in Washington. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.