Bay St. Louis is a somewhat small coastal city (i.e. on the ocean, a bay, or inlet) located in the state of Mississippi. With a population of 10,596 people and five associated neighborhoods, Bay St. Louis is the 46th largest community in Mississippi. There's nothing like the smell of a brand new house, and in Bay St. Louis, you'll find that a large proportion of houses were recently built. New growth in residential real estate is an indication that people are choosing to move to Bay St. Louis, and putting down their money on brand new construction. Bay St. Louis’s real estate is, on average, some of the newest in the nation. Bay St. Louis does seem to be experiencing an influx of affluent people, because the median household income is $63,508.00.

Bay St. Louis real estate is some of the most expensive in Mississippi, although Bay St. Louis house values don't compare to the most expensive real estate in the U.S.

Also of interest is that Bay St. Louis has more people living here who work in computers and math than 95% of the places in the US.

Telecommuters are a relatively large percentage of the workforce: 14.31% 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.

Residents will find that the city is relatively quiet. This is because it is not over-populated, and it has fewer college students, renters, and young children - all of whom can be noisy at times. So, if you're looking for a relatively peaceful place to live, Bay St. Louis is worth considering.

Bay St. Louis 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.

Being a small city, Bay St. Louis does not have a public transit system used by locals to get to and from work.

The citizens of Bay St. Louis are very well educated compared to the average community in the nation: 36.36% of adults in Bay St. Louis have a bachelor's degree or even advanced degree.

The per capita income in Bay St. Louis in 2022 was $45,280, which is wealthy relative to Mississippi and the nation. This equates to an annual income of $181,120 for a family of four. However, Bay St. Louis contains both very wealthy and poor people as well.

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

The most common language spoken in Bay St. Louis is English. Other important languages spoken here include Italian and Polish.