Bay St. Louis Population

1880–2026

10,912

2026 projection

15.6% since 2020 (increase)

05K10K15K20K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Bay St. Louis. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202610,912+2782.61%
202510,634+820.78%
202410,552+310.29%
202310,521-560.53%
202210,577+6186.21%
20219,959+5215.52%
20209,438-4,60632.80%
201914,044+5273.90%
201813,517+4863.73%
201713,031+4863.87%

Showing 10 of 30 years.

Bay St. Louis Demographics

53.3median age

Median age

Female53 yrs
Male53.6 yrs

Adults

8,768
2,869 seniors · 33%5,899 other adults

Sex

Female 51.6% · 5,258Male 48.4% · 4,930

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 102 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Bay St. Louis Income

$67,442median household income

Median household income

$67,442

Half of households earn more, half earn less

Median earnings

$56,519

Typical yearly pay for a worker 25 or older.

Poverty rate

14.5%

About 1 in 7 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Bay St. Louis Marital Status

59% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married59%63%55%
Never married20%20%19%
Divorced13%12%13%
Widowed6%2%10%
Separated3%3%4%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201