Marrero is a medium-sized town located in the state of Louisiana. With a population of 32,382 people and 15 associated neighborhoods, Marrero is the 13th largest community in Louisiana.

The citizens of Marrero are slightly less educated than the national average of 21.84% for the average city or town: 13.51% of adults in Marrero have a bachelor's degree or advanced degree

The per capita income in Marrero in 2018 was $25,731, which is middle income relative to Louisiana, and lower middle income relative to the rest of the US. This equates to an annual income of $102,924 for a family of four. However, Marrero contains both very wealthy and poor people as well.

Marrero is an extremely ethnically-diverse town. The people who call Marrero home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Marrero residents report their race to be Black or African-American, followed by White. Important ancestries of people in Marrero include French, Italian, German, English, and Irish.

The most common language spoken in Marrero is English. Other important languages spoken here include Vietnamese and Spanish.