In 2023, Mermentau, LA had a population of 570 people with a median age of 68.6 and a median household income of $112,864. Between 2022 and 2023 the population of Mermentau, LA declined from 644 to 570, a −11.5% decrease and its median household income grew from $110,213 to $112,864, a 2.41% increase.
The 5 largest ethnic groups in Mermentau, LA are White (Non-Hispanic) (83.9%), Black or African American (Non-Hispanic) (10.9%), Two+ (Non-Hispanic) (3.51%), Two+ (Hispanic) (1.75%), and White (Hispanic) (0%).
None of the households in Mermentau, LA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
100% of the residents in Mermentau, LA are U.S. citizens.
In 2023, the median property value in Mermentau, LA was $55,900, and the homeownership rate was 81.3%.
Most people in Mermentau, LA drove alone to work, and the average commute time was 21.5 minutes. The average car ownership in Mermentau, LA was 2 cars per household.