Winthrop, Washington Demographics & Population 2026

A note before these figures: with a population of 423, Winthrop'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

Winthrop is a small community located in Washington, within Okanogan County. The total population is 423. It ranks as the 496th most populous out of 628 Census-designated places in Washington.

Age Demographics

The median age in Winthrop is 35.1 years. This is 8% lower than the state median of 38.3 years. With 30.3% of the population under 18, Winthrop has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Winthrop is $66,908. This is 32% lower than the state median of $98,141. It is also 17% lower than the national median of $80,734. The poverty rate stands at 2.9%. This is 71% lower than the state poverty rate of 9.9%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 1.0%. This is 81% lower than the state rate of 5.1%. The median home value is $475,000. Housing costs are 16% lower than the state median of $564,600. The home-value-to-income ratio of 7.1x suggests that housing affordability is a significant concern for many residents. 54.0% of occupied housing units are owner-occupied. This homeownership rate is 15% lower than the state average of 63.8%.

Race & Ethnicity

The largest racial or ethnic group in Winthrop is White (non-Hispanic), making up 71.9% of the population. Hispanic or Latino residents account for 22.2%. The Black or African American population (0.7%) is well below the state average of 3.9%. The Hispanic or Latino population is significantly higher than the state average (22.2% vs 14.4%).

Education

35.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 10% 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 92.3%.

Data Sources & Methodology

All demographic data for Winthrop, 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.