Washington County, Maryland
Located in Maryland, Washington County has a population of 155,709 residents and a median age of 40.7 years, making it the #447 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 12.4%. The median home value is $296,100, and the median household income is $77,747, which is 3% above the national median.
Demographics
Washington County has a population of 155,709, making it the #447 most populous county in the US. The median age is 40.7 years, which is 4.6% 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 Washington County is $77,747, ranking #684 out of 3,222 counties — 3.5% above the national median. The poverty rate is 12.4% and unemployment stands at 4.2%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Washington County is $296,100 (+5.0% vs national). Renters pay a median of $1,147/mo and the homeownership rate is 66.8%.
Median Home Value Trend
Rankings →Household Type
Education
In Washington County, 24.1% of adults age 25+ hold a bachelor's degree or higher, which is 28.4% below the national average, ranking #1,347 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Washington County is 74.5 years. 17.5% of adults report poor or fair health and 7.6% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
16.2% of adults in Washington County smoke , 42.3% are obese , and 17.7% report excessive drinking. The drug overdose death rate is 65.4 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Washington County is 5.0 per 100,000 and the suicide rate is 13.8 per 100,000. Motor vehicle deaths occur at a rate of 12.5 per 100,000.
Homicide Rate Trend
Families & Children
15.4% of children in Washington County live in poverty and the infant mortality rate is 6.9 per 1,000 live births. The teen birth rate is 19.5 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Washington County is 59.2%. The mean commute time is 31.2 min, which is 13.0% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Washington County voted Republican with a margin of 23.0%. The vote was 37.3% Dem / 60.3% Rep. Compared to 2020, the margin shifted 2.1 toward Republicans .
Vote Share Over Time
About Washington County, Maryland
Washington County, Maryland has a total population of 155,709, making it the 447th most populous county in the United States. The median age in Washington County is 40.7 years, which is 4.6% above the national median of 38.9 years.
The median household income in Washington County is $77,747, which ranks #684 of 3,222 counties nationwide. This is 3.5% above the national median of $75,149. The poverty rate is 12.4%, lower than the national rate of 12.6%. The unemployment rate stands at 4.2%.
The median home value in Washington County is $296,100, 5.0% above the national median. Renters in Washington County pay a median gross rent of $1,147 per month. The homeownership rate is 66.8%, compared to the national rate of 64.4%.
In Washington County, 24.1% of residents aged 25 and older hold a bachelor's degree or higher, 28.4% below the national average of 33.7%. Health insurance coverage stands at 93.7% of the population. The average commute time for workers is 31.2 min.
Washington County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 73.3% of the population, followed by Black (non-Hispanic) (11.5%) and Hispanic or Latino (7.9%).
All data for Washington County, Maryland 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.