Slidell is a medium-sized coastal city (i.e. on the ocean, a bay, or inlet) located in the state of Louisiana. With a population of 28,649 people and 19 associated neighborhoods, Slidell is the 16th largest community in Louisiana.

Telecommuters are a relatively large percentage of the workforce: 10.79% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

Slidell is also nautical, which means that parts of it are somewhat historic and touch the ocean or tidal bodies of water, such as inlets and bays. Such areas are often places that visitors and locals go for waterfront activities or taking in the scenery.

The overall education level of Slidell is somewhat higher than in the average US city of 21.84%: 28.56% of adults 25 and older in the city have at least a bachelor's degree.

The per capita income in Slidell in 2022 was $31,276, which is upper middle income relative to Louisiana, and middle income relative to the rest of the US. This equates to an annual income of $125,104 for a family of four. However, Slidell contains both very wealthy and poor people as well.

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

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