Marengo County, Alabama
Located in Alabama, Marengo County has a population of 18,851 residents and a median age of 41.4 years, making it the #1,941 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 21.9%. The median home value is $107,400, and the median household income is $43,825, which is 42% below the national median.
Demographics
Marengo County has a population of 18,851, making it the #1,941 most populous county in the US. The median age is 41.4 years, which is 6.4% 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 Marengo County is $43,825, ranking #2,994 out of 3,222 counties — 41.7% below the national median. The poverty rate is 21.9% and unemployment stands at 4.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Marengo County is $107,400 (-61.9% vs national). Renters pay a median of $716/mo and the homeownership rate is 70.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Marengo County, 19.5% of adults age 25+ hold a bachelor's degree or higher, which is 42.3% below the national average, ranking #2,095 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Marengo County is 70.8 years. 26.0% of adults report poor or fair health and 10.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.9% of adults in Marengo County smoke , 46.1% are obese , and 14.6% report excessive drinking.
Adult Smoking Trend
Safety
The homicide rate in Marengo County is 15.7 per 100,000 and the suicide rate is 16.2 per 100,000. Motor vehicle deaths occur at a rate of 29.2 per 100,000.
Homicide Rate Trend
Families & Children
33.1% of children in Marengo County live in poverty . The teen birth rate is 26.1 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Marengo County is 74.6%. The mean commute time is 28.9 min, which is 4.8% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Marengo County voted Republican with a margin of 3.7%. The vote was 47.9% Dem / 51.6% Rep. Compared to 2020, the margin shifted 5.0 toward Republicans .
Vote Share Over Time
About Marengo County, Alabama
Marengo County, Alabama has a total population of 18,851, making it the 1,941st most populous county in the United States. The median age in Marengo County is 41.4 years, which is 6.4% above the national median of 38.9 years.
The median household income in Marengo County is $43,825, which ranks #2,994 of 3,222 counties nationwide. This is 41.7% below the national median of $75,149. The poverty rate is 21.9%, higher than the national rate of 12.6%. The unemployment rate stands at 4.1%.
The median home value in Marengo County is $107,400, 61.9% below the national median. Renters in Marengo County pay a median gross rent of $716 per month. The homeownership rate is 70.2%, compared to the national rate of 64.4%.
In Marengo County, 19.5% of residents aged 25 and older hold a bachelor's degree or higher, 42.3% below the national average of 33.7%. Health insurance coverage stands at 90.8% of the population. The average commute time for workers is 28.9 min.
Marengo County is a diverse community. The largest racial or ethnic group is Black (non-Hispanic) at 50.8% of the population, followed by White (non-Hispanic) (44.3%) and Hispanic or Latino (2.7%).
All data for Marengo County, Alabama 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.