In 2018, Marengo County, AL had a population of 19.5k people with a median age of 42.7 and a median household income of $32,809. Between 2017 and 2018 the population of Marengo County, AL declined from 19,743 to 19,538, a -1.04% decrease and its median household income grew from $32,255 to $32,809, a 1.72% increase.
The 5 largest ethnic groups in Marengo County, AL are Black or African American (Non-Hispanic) (53.8%), White (Non-Hispanic) (45%), White (Hispanic) (0.328%), Two+ (Non-Hispanic) (0.287%), and American Indian & Alaska Native (Non-Hispanic) (0.261%). 0% of the households in Marengo County, AL speak a non-English language at home as their primary language, and 99.6% of the residents in Marengo County, AL are U.S. citizens.
In 2018, the median property value in Marengo County, AL was $90,000, and the homeownership rate was 71.2%. Most people in Marengo County, AL drove alone to work, and the average commute time was 24.7 minutes. The average car ownership in Marengo County, AL was 2 cars per household.