Brinnon, Washington Demographics & Population 2026

A note before these figures: with a population of 758, Brinnon'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

Brinnon is a small community located in Washington, within Jefferson County. The total population is 758. It ranks as the 424th most populous out of 628 Census-designated places in Washington.

Age Demographics

The median age in Brinnon is 67.9 years. This is 77% higher than the state median of 38.3 years. Only 5.8% of residents are under 18, indicating fewer families with children. 18.1% 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 Brinnon is $62,857. This is 36% lower than the state median of $98,141. It is also 22% lower than the national median of $80,734. The poverty rate stands at 16.9%. This is 71% higher than the state poverty rate of 9.9%. The unemployment rate is 1.0%. This is 80% lower than the state rate of 5.1%. The median home value is $275,000. Housing costs are 51% lower than the state median of $564,600. The home-value-to-income ratio is 4.4x. 89.8% of occupied housing units are owner-occupied. This homeownership rate is 41% higher than the state average of 63.8%.

Race & Ethnicity

Brinnon has a predominantly White (non-Hispanic) population, comprising 85.2% of all residents. Hispanic or Latino residents account for 4.6%. The Hispanic or Latino population (4.6%) is well below the state average of 14.4%. The Asian population (3.2%) is well below the state average of 9.7%.

Education

28.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 28% lower 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 94.7%. Notably, 15.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Brinnon, 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.