Hartline, Washington Demographics & Population 2026

A note before these figures: with a population of 182, Hartline'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

Hartline is a small community located in Washington, within Grant County. The total population is 182. It ranks as the 562nd most populous out of 628 Census-designated places in Washington.

Age Demographics

The median age in Hartline is 55.5 years. This is 45% higher than the state median of 38.3 years. Only 13.2% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Hartline is $88,125. This is 10% lower than the state median of $98,141. It is also 9% higher than the national median of $80,734. The poverty rate stands at 7.7%. This is 22% lower than the state poverty rate of 9.9%. The unemployment rate is 1.1%. This is 78% lower than the state rate of 5.1%. The median home value is $186,100. Housing costs are 67% lower than the state median of $564,600. With a home-value-to-income ratio of just 2.1x, Hartline is one of the most affordable housing markets in the area. 88.3% of occupied housing units are owner-occupied. This homeownership rate is 39% higher than the state average of 63.8%.

Race & Ethnicity

Hartline has a predominantly White (non-Hispanic) population, comprising 91.8% of all residents. Hispanic or Latino residents account for 1.1%. The Hispanic or Latino population (1.1%) is well below the state average of 14.4%.

Education

31.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 21% 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 91.3%. Notably, 16.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Hartline, 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.