Bay St. Louis is a medium-sized coastal city (i.e. on the ocean, a bay, or inlet) located in the state of Mississippi. With a population of 10,511 people and five associated neighborhoods, Bay St. Louis is the 46th largest community in Mississippi. Much of the housing stock in Bay St. Louis was built relatively recently. The construction of new real estate can often be taken as an indication that the local Bay St. Louis economy is robust, and that jobs or other amenities are attracting an influx of new residents. This seems to be the case in Bay St. Louis, where the median household income is $70,082.00.

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.

There are quite a few people in the armed forces living in Bay St. Louis, and when you visit or drive around town, you will see military people in and out of uniform, shopping, enjoying life, and being part of the community.

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: 13.24% 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.

It is a fairly quiet city because there are relatively few of those groups of people who have a tendency to be noisy. (Children, for example, often can't help themselves from being noisy, and being parents ourselves, we know!) Bay St. Louis has relatively few families with children living at home, and is quieter because of it. Renters and college students, for their own reasons, can also be noisy. Bay St. Louis has few renters and college students. But the biggest reason it is quieter in Bay St. Louis than in most places in America, is that there are just simply fewer people living here. If you think trees make good neighbors, Bay St. Louis may be for you.

One of the nice things about Bay St. Louis is that it is nautical, which means that parts of it are somewhat historic and touch the ocean or tidal bodies of water, such as inlets and bays. Because of this, visitors and locals will often go to these areas to take in the scenery or to enjoy waterfront activities.

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

The population of Bay St. Louis is very well educated relative to most cities and towns in the nation, where the average community has 21.84% of its adult population holding a 4-year degree or higher: 35.20% 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 $50,050, which is wealthy relative to Mississippi and the nation. This equates to an annual income of $200,200 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, Irish, German, and Italian.

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