Carroll County, Maryland
Located in Maryland, Carroll County has a population of 175,321 residents and a median age of 41.3 years, making it the #391 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 5.2%. The median home value is $434,000, and the median household income is $118,211, which is 57% above the national median.
Demographics
Carroll County has a population of 175,321, making it the #391 most populous county in the US. The median age is 41.3 years, which is 6.2% 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 Carroll County is $118,211, ranking #61 out of 3,222 counties — 57.3% above the national median. The poverty rate is 5.2% and unemployment stands at 3.4%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Carroll County is $434,000 (+54.0% vs national). Renters pay a median of $1,427/mo and the homeownership rate is 84.3%.
Median Home Value Trend
Rankings →Household Type
Education
In Carroll County, 40.7% of adults age 25+ hold a bachelor's degree or higher, which is 20.7% above the national average, ranking #262 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Carroll County is 78.2 years. 13.2% of adults report poor or fair health and 4.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
11.9% of adults in Carroll County smoke , 31.5% are obese , and 20.6% report excessive drinking. The drug overdose death rate is 35.5 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Carroll County is 1.5 per 100,000 and the suicide rate is 11.8 per 100,000. Motor vehicle deaths occur at a rate of 10.7 per 100,000.
Homicide Rate Trend
Families & Children
5.8% of children in Carroll County live in poverty and the infant mortality rate is 3.2 per 1,000 live births. The teen birth rate is 5.4 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Carroll County is 77.8%. The mean commute time is 38.0 min, which is 37.7% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Carroll County voted Republican with a margin of 25.0%. The vote was 36.2% Dem / 61.2% Rep. Compared to 2020, the margin shifted 1.3 toward Republicans .
Vote Share Over Time
About Carroll County, Maryland
Carroll County, Maryland has a total population of 175,321, making it the 391st most populous county in the United States. The median age in Carroll County is 41.3 years, which is 6.2% above the national median of 38.9 years.
The median household income in Carroll County is $118,211, which ranks #61 of 3,222 counties nationwide. This is 57.3% above the national median of $75,149. The poverty rate is 5.2%, lower than the national rate of 12.6%. The unemployment rate stands at 3.4%.
The median home value in Carroll County is $434,000, 54.0% above the national median. Renters in Carroll County pay a median gross rent of $1,427 per month. The homeownership rate is 84.3%, compared to the national rate of 64.4%.
In Carroll County, 40.7% of residents aged 25 and older hold a bachelor's degree or higher, 20.7% above the national average of 33.7%. Health insurance coverage stands at 97.1% of the population. The average commute time for workers is 38.0 min.
Carroll County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 84.5% of the population, followed by Hispanic or Latino (5.1%) and Black (non-Hispanic) (4.0%).
All data for Carroll 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.