Bay Saint Louis, MS demographics:
population, income, and more

Total population
15,561
0.6% year-over-year change
Median household income
$62,176/yr
-4.5% year-over-year change
Housing units
8,994
4.7% year-over-year change

Bay Saint Louis population

How many people live in Bay Saint Louis

Bay Saint Louis is home to 15,561 residents, according to the most recent Census data. Gender-wise, 47% of Bay Saint Louis locals are male, and 53% are female.

Total population
15,561
0.6% year-over-year change
Gender ratio
Male
47%
7,314
Female
53%
8,247
Value Percent YoY change
Male 7,314 47% -0.2%
Female 8,247 53% 1.3%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Bay Saint Louis is 50, with the population distributed as follows: about 14.8% are children under 15, then 9% are in the 15 to 24 age group. Adults between 25 and 44 make up 19.6% of the population, while another 32.4% fall into the 45 to 64 bracket. Finally, around 24.3% are 65 or older.

Median age
50.2
Age breakdown
Under 15
14.8%
15 to 24
9%
25 to 44
19.6%
45 to 64
32.4%
Over 65
24.3%
Value Percent YoY change
Under 15 2,302 14.8% -3.8%
15 to 24 1,401 9% 30.4%
25 to 44 3,045 19.6% -6.2%
45 to 64 5,037 32.4% -4.0%
Over 65 3,776 24.3% 7.6%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Bay Saint Louis, 96.1% of the population are US-born citizens, while 2.8% have gained naturalized citizenship. At the same time, 1.1% of residents are non-citizens. As for race, 80.1% of locals are Caucasian, 10.8% are African American and 1.1% have Asian roots. There’s also a share of 5.8% that includes residents with two or more races.

Citizenship
U.S.-born citizens
96.1%
Non-U.S.-born citizens
2.8%
Non-citizens
1.1%
Value Percent YoY change
U.S.-born citizens 14,952 96.1% 0.8%
Non-U.S.-born citizens 435 2.8% -4.6%
Non-citizens 174 1.1% -1.7%
Racial breakdown
White
80.1%
Black or African American
10.8%
American Indian and Alaska Native
0.5%
Asian
1.1%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.8%
Other
1.8%
Value Percent
White 12,461 80.1%
Black or African American 1,678 10.8%
American Indian and Alaska Native 81 0.5%
Asian 168 1.1%
Two or more races 894 5.8%
Other 279 1.8%

Households in Bay Saint Louis

A peek inside Bay Saint Louis households

Bay Saint Louis has 7,213 households, with an average of 2 members in each. Of these, 66.5% are families, while the remaining 33.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
7,213
3.0% year-over-year change
Average people per household
2
Non-family households
2,417
Family households
4,796
Value Percent YoY change
Non-family households 2,417 33.5% 3.4%
Family households 4,796 66.5% 2.8%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Bay Saint Louis

The housing landscape of Bay Saint Louis

Bay Saint Louis's housing consists of 8,994 units, with 79% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.8% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 7.7% of the housing landscape.

Housing units
8,994
4.7% year-over-year change
Housing types
Value Percent
1 unit, detached 7,109 79%
1 unit, attached 166 1.8%
2 units 191 2.1%
3 or 4 units 150 1.7%
5 to 9 units 241 2.7%
10 to 19 units 83 0.9%
20 to 49 units 105 1.2%
50 or more units 198 2.2%
Mobile home 694 7.7%
Boat, RV, van, etc. 57 0.6%
Homes built since 2020
275
54.5% year-over-year change

The age of buildings in Bay Saint Louis

In Bay Saint Louis, the median construction year is 1998. About 5.6% of homes were built before the 1940s, with another 2.4% going up by 1949. Most development happened in the second half of the 20th century. Then, 30.7% of homes were added from 2000 to 2009, 14.2% between 2010 and 2019, and 3.1% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 504 5.6% -9.2%
Built between 1940 and 1949 219 2.4% -26.8%
Built between 1950 and 1959 157 1.8% -7.1%
Built between 1960 and 1969 1,022 11.4% 12.4%
Built between 1970 and 1979 1,098 12.2% 14.1%
Built between 1980 and 1989 533 5.9% -2.0%
Built between 1990 and 1999 1,142 12.7% 6.6%
Built between 2000 and 2009 2,765 30.7% 0.2%
Built between 2010 and 2019 1,279 14.2% 11.6%
Built in 2020 or later 275 3.1% 54.5%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Bay Saint Louis occupancy rates

Out of the 7,213 occupied housing units in Bay Saint Louis, 75% are owner-occupied, while 25% are lived in by tenants. Meanwhile, 19.8% of all homes on the local market sit vacant.

Occupied housing units
7,213
3.0% year-over-year change
Occupancy breakdown
Renter occupied
1,803
Owner occupied
5,410
Value Percent YoY
change
Renter occupied 1,803 25% -2.8%
Owner occupied 5,410 75% 5.1%
Unoccupied housing units
19.8%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Bay Saint Louis housing costs

Housing costs in Bay Saint Louis come to a median of $884 per month, while tenants specifically pay a median gross rent of $1,127.

Median housing costs per month
$884/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Bay Saint Louis
$1,127/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Bay Saint Louis

Bay Saint Louis education at a glance

About 35% of the population in Bay Saint Louis went to high school, while 21% pursued college studies. Another 10.2% earned an associate degree and 17.5% hold a bachelor’s. Meanwhile, 12% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 542 4.3% 12.9%
High school diploma 4,432 35% -3.4%
College diploma 2,654 21% -3.4%
Associate degree 1,288 10.2% -5.8%
Bachelor's degree 2,209 17.5% 16.6%
Graduate degree 1,522 12% 1.1%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Bay Saint Louis

How much people earn in Bay Saint Louis

The average annual household income in Bay Saint Louis was $107,119 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.4% change from the previous year. At the same time, the median income stood at $62,176, reflecting a -4.6% shift over the same period.

Average household income in Bay Saint Louis
$107,119/year
2.4% year-over-year change
Median household income in Bay Saint Louis
$62,176/year
-4.5% year-over-year change

Bay Saint Louis income by age

In Bay Saint Louis, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $50,963. Those with someone between 45 and 64 in charge, often well established professionally, earn $86,214 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $65,565, while those led by someone over 65, many of whom may be retired, have about $51,589 in earnings. Overall, 84% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $65,565 4.2%
25 - 44 $50,963 N/A
45 - 64 $86,214 -3.7%
Over 65 $51,589 7.1%
Above poverty level
12,840
Below poverty level
2,455
Value Percent YoY
change
Above poverty level 12,840 84% -1.2%
Below poverty level 2,455 16% 12.2%

Employment in Bay Saint Louis

Workforce and job types in Bay Saint Louis

81.1% of the working population are employed in professional or administrative positions, while 18.9% are in hands-on or service-based jobs. Also, 13.4% run their own businesses, 60.3% are employed by private companies, and 19.8% work in the public sector.

Workforce demographics

White collar
5,657
Blue collar
1,318
Value Percent YoY change
White collar 5,657 81.1% 4.0%
Blue collar 1,318 18.9% -22.2%
Employer type
Self employees
13.4%
Private companies
60.3%
Governmental workers
19.8%
Not for profit companies
6.6%
Value Percent YoY change
Self employees 932 13.4% 16.5%
Private companies 4,203 60.3% -2.3%
Governmental workers 1,379 19.8% -10.7%
Not for profit companies 461 6.6% -5.5%

Transportation in Bay Saint Louis

How people get around in Bay Saint Louis

In Bay Saint Louis, the average commute time is 28 minutes. Commuting methods vary: 98.2% of residents travel by personal vehicle and 1.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
28 min
-12.5% year-over-year change
Means of transportation
Value Percent YoY change
Car 5,504 98.2% -5.4%
Bicycle 9 0.2% 80.0%
Walk 89 1.6% -11.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Bay Saint Louis by zipcode?

Zipcode Population Number of households Median income Average income
39520 15,561 7,213 $62,176 $107,159

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FAQs about Bay Saint Louis demographics 

What is the total population of Bay Saint Louis?

Bay Saint Louis has a total population of 15,561 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.6% compared to a year ago.

What is the gender ratio in Bay Saint Louis?

The gender ratio in Bay Saint Louis is as follows:
  • 47% males (7,314 residents)
  • 53% females (8,247 residents)

What is the median age in Bay Saint Louis?

The median age in Bay Saint Louis is 50.2.

What is the age distribution of the population in Bay Saint Louis?

The age distribution in Bay Saint Louis is as follows:
  • Under 15: 14.8% (2,302 residents)
  • Ages 15-24: 9% (1,401 residents)
  • Ages 25-44: 19.6% (3,045 residents)
  • Ages 45-64: 32.4% (5,037 residents)
  • Over 65: 24.3% (3,776 residents)

What is the racial and ethnic makeup of Bay Saint Louis?

The racial and ethnic makeup of Bay Saint Louis is as follows:
  • White: 80.1% (12,461 residents)
  • Black or African American: 10.8% (1,678 residents)
  • American Indian and Alaska Native: 0.5% (81 residents)
  • Asian: 1.1% (168 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 5.8% (894 residents)
  • Other: 1.8% (279 residents)

What percentage of the population in Bay Saint Louis are U.S.-born citizens?

U.S.-born citizens represent 96.1% of the population in Bay Saint Louis.

How many housing units are there in Bay Saint Louis?

There are 8,994 housing units in Bay Saint Louis, reflecting a +4.7% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Bay Saint Louis and what is the average household size?

Bay Saint Louis has a total of 7,213 households, with an average of 2 people in each.

What is the median household income in Bay Saint Louis?

Bay Saint Louis has a median household income of $62,176, representing a -4.5% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Bay Saint Louis?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 81.1% (5,657 residents)
  • Blue-collar workers: 18.9% (1,318 residents)

Places of employment:
  • Self-employed: 13.4% (932 residents)
  • Private companies: 60.3% (4,203 residents)
  • Governmental workers: 19.8% (1,379 residents)
  • Not-for-profit companies: 6.6% (461 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025