Mason County, Washington
Located in Washington, Mason County has a population of 67,982 residents and a median age of 44.7 years, making it the #806 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 12.3%. The median home value is $411,800, and the median household income is $83,270, which is 11% above the national median.
Demographics
Mason County has a population of 67,982, making it the #806 most populous county in the US. The median age is 44.7 years, which is 14.9% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Mason County is $83,270, ranking #476 out of 3,222 counties — 10.8% above the national median. The poverty rate is 12.3% and unemployment stands at 6.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Mason County is $411,800 (+46.1% vs national). Renters pay a median of $1,285/mo and the homeownership rate is 82.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Mason County, 21.9% of adults age 25+ hold a bachelor's degree or higher, which is 35.0% below the national average, ranking #1,672 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Mason County is 76.6 years. 17.4% of adults report poor or fair health and 10.4% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
14.4% of adults in Mason County smoke , 37.7% are obese , and 21.7% report excessive drinking. The drug overdose death rate is 44.6 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Mason County is 4.3 per 100,000 and the suicide rate is 23.6 per 100,000. Motor vehicle deaths occur at a rate of 15.6 per 100,000.
Homicide Rate Trend
Families & Children
17.6% of children in Mason County live in poverty and the infant mortality rate is 4.5 per 1,000 live births. The teen birth rate is 23.7 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Mason County is 74.2%. The mean commute time is 38.3 min, which is 38.7% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Mason County voted Republican with a margin of 2.5%. The vote was 47.2% Dem / 49.7% Rep. Compared to 2020, the margin shifted +1.4 toward Democrats .
Vote Share Over Time
About Mason County, Washington
Mason County, Washington has a total population of 67,982, making it the 806th most populous county in the United States. The median age in Mason County is 44.7 years, which is 14.9% above the national median of 38.9 years.
The median household income in Mason County is $83,270, which ranks #476 of 3,222 counties nationwide. This is 10.8% above the national median of $75,149. The poverty rate is 12.3%, lower than the national rate of 12.6%. The unemployment rate stands at 6.5%.
The median home value in Mason County is $411,800, 46.1% above the national median. Renters in Mason County pay a median gross rent of $1,285 per month. The homeownership rate is 82.3%, compared to the national rate of 64.4%.
In Mason County, 21.9% of residents aged 25 and older hold a bachelor's degree or higher, 35.0% below the national average of 33.7%. Health insurance coverage stands at 93.3% of the population. The average commute time for workers is 38.3 min.
Mason County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 74.9% of the population, followed by Hispanic or Latino (12.8%) and Two or More Races (7.7%).
All data for Mason County, Washington comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.