In 2019, Marengo County, AL had a population of 19.3k people with a median age of 42.2 and a median household income of $33,241. Between 2018 and 2019 the population of Marengo County, AL declined from 19,538 to 19,321, a −1.11% decrease and its median household income grew from $32,809 to $33,241, a 1.32% increase.
The 5 largest ethnic groups in Marengo County, AL are Black or African American (Non-Hispanic) (53.6%), White (Non-Hispanic) (44.9%), White (Hispanic) (0.87%), Two+ (Non-Hispanic) (0.435%), and Other (Hispanic) (0.145%). 0% of the households in Marengo County, AL speak a non-English language at home as their primary language.
99.7% of the residents in Marengo County, AL are U.S. citizens.
In 2019, the median property value in Marengo County, AL was $84,400, and the homeownership rate was 71.5%. Most people in Marengo County, AL drove alone to work, and the average commute time was 23.5 minutes. The average car ownership in Marengo County, AL was 2 cars per household.