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. 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 $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.

A relatively large number of people in Bay St. Louis telecommute to their jobs. Overall, about 13.24% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. 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.

The city is relatively quiet, having a combination of lower population density and few of those groups of people who have a tendency to be noisy. For example, Bay St. Louis has relatively fewer families with younger children, and/or college students. Combined, this makes Bay St. Louis a pretty quiet place to live overall. If you like quiet, you will probably enjoy it here.

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 education level of Bay St. Louis citizens is very high relative to the national average among all cities (21.84%): 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.