Ocosta, Washington Demographics & Population 2026

A note before these figures: with a population of 235, Ocosta'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

Ocosta is a small community located in Washington, within Grays Harbor County. The total population is 235. It ranks as the 541st most populous out of 628 Census-designated places in Washington.

Age Demographics

The median age in Ocosta is 55.7 years. This is 45% higher than the state median of 38.3 years.

Economy, Income & Housing

The median household income in Ocosta is $48,203. This is 51% lower than the state median of $98,141. It is also 40% lower than the national median of $80,734. The poverty rate stands at 16.6%. This is 68% higher than the state poverty rate of 9.9%. The survey records no unemployed residents in Ocosta, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $122,400. Housing costs are 78% lower than the state median of $564,600. With a home-value-to-income ratio of just 2.5x, Ocosta is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 57% higher than the state average of 63.8%.

Race & Ethnicity

Ocosta has a predominantly White (non-Hispanic) population, comprising 97.5% of all residents. Hispanic or Latino residents account for 2.5%. The White (non-Hispanic) population is significantly higher than the state average (97.5% vs 63.1%). The Hispanic or Latino population (2.5%) is well below the state average of 14.4%.

Education

12.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 69% 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 96.4%.

Data Sources & Methodology

All demographic data for Ocosta, 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.