Baltimore County, Maryland
Located in Maryland, Baltimore County has a population of 850,796 residents and a median age of 39.7 years, making it the #72 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 9.8%. The median home value is $349,300, and the median household income is $91,768, which is 22% above the national median.
Demographics
Baltimore County has a population of 850,796, making it the #72 most populous county in the US. The median age is 39.7 years, which is 2.1% 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 Baltimore County is $91,768, ranking #272 out of 3,222 counties — 22.1% above the national median. The poverty rate is 9.8% and unemployment stands at 4.9%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Baltimore County is $349,300 (+23.9% vs national). Renters pay a median of $1,627/mo and the homeownership rate is 66.4%.
Median Home Value Trend
Rankings →Household Type
Education
In Baltimore County, 42.3% of adults age 25+ hold a bachelor's degree or higher, which is 25.6% above the national average, ranking #217 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Baltimore County is 76.9 years. 14.8% of adults report poor or fair health and 6.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.2% of adults in Baltimore County smoke , 33.2% are obese , and 17.4% report excessive drinking. The drug overdose death rate is 50.9 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Baltimore County is 10.0 per 100,000 and the suicide rate is 10.3 per 100,000. Motor vehicle deaths occur at a rate of 9.1 per 100,000.
Homicide Rate Trend
Families & Children
10.3% of children in Baltimore County live in poverty and the infant mortality rate is 6.3 per 1,000 live births. The teen birth rate is 11.5 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Baltimore County is 68.0%. The mean commute time is 30.8 min, which is 11.7% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Baltimore County voted Democratic with a margin of 24.5%. The vote was 61% Dem / 36.5% Rep. Compared to 2020, the margin shifted 2.6 toward Republicans .
Vote Share Over Time
About Baltimore County, Maryland
Baltimore County, Maryland has a total population of 850,796, making it the 72nd most populous county in the United States. The median age in Baltimore County is 39.7 years, which is 2.1% above the national median of 38.9 years.
The median household income in Baltimore County is $91,768, which ranks #272 of 3,222 counties nationwide. This is 22.1% above the national median of $75,149. The poverty rate is 9.8%, lower than the national rate of 12.6%. The unemployment rate stands at 4.9%.
The median home value in Baltimore County is $349,300, 23.9% above the national median. Renters in Baltimore County pay a median gross rent of $1,627 per month. The homeownership rate is 66.4%, compared to the national rate of 64.4%.
In Baltimore County, 42.3% of residents aged 25 and older hold a bachelor's degree or higher, 25.6% above the national average of 33.7%. Health insurance coverage stands at 94.6% of the population. The average commute time for workers is 30.8 min.
Baltimore County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 51.1% of the population, followed by Black (non-Hispanic) (30.1%) and Hispanic or Latino (7.8%).
All data for Baltimore 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.