Bay St. Louis city, Mississippi Demographics & Population 2026
As of 2026, Bay St. Louis city, Mississippi has a total population of 9,971, the 42nd largest city in Mississippi, with a median household income of $70,082, which is 28% higher than the state average. The poverty rate is 13.7%.
Bay St. Louis city Quick Facts
How Bay St. Louis city Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 55 | National average: 60
Education
Educational Attainment (Adults 25+)
Bay St. Louis city Rankings in Mississippi
Explore Mississippi Rankings
Cities Similar to Bay St. Louis city
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Flowood city | 10,384 | $83,204 | $288,400 | 50.6% | 16.4% |
| Petal city | 11,195 | $72,845 | $161,400 | 29.1% | 13.3% |
| Diamondhead city | 9,338 | $86,208 | $236,700 | 40.1% | 5.4% |
| Gulf Hills CDP | 8,193 | $66,472 | $191,800 | 37.9% | 10.9% |
| Booneville city | 9,060 | $50,112 | $123,500 | 24.9% | 12.9% |
Population Overview
Bay St. Louis city is a small city located in Mississippi. The total population is 9,971. It ranks as the 42nd most populous out of 419 cities and towns in Mississippi.
Age Demographics
The median age in Bay St. Louis city is 52.8 years. This is 38% higher than the state median of 38.4 years.
Economy, Income & Housing
The median household income in Bay St. Louis city is $70,082. This is 28% higher than the state median of $54,915. Compared to the national median of $78,538, household income here is 11% lower. The poverty rate stands at 13.7%. This is 28% lower than the state poverty rate of 19.1%. The unemployment rate is 7.4%. This is 23% higher than the state rate of 6.0%. The median home value is $231,900. Housing costs are 44% higher than the state median of $161,400. The home-value-to-income ratio is 3.3x. 75.6% of occupied housing units are owner-occupied. This homeownership rate is 9% higher than the state average of 69.5%.
Race & Ethnicity
The largest racial or ethnic group in Bay St. Louis city is White (non-Hispanic), making up 75.0% of the population. Black or African American residents account for 15.1%. The Black or African American population (15.1%) is well below the state average of 36.9%.
Education
35.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 46% higher than the state rate of 24.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.5%. Notably, 15.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Bay St. Louis city, Mississippi is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Mississippi state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 419 Census-designated places in Mississippi. For official data, visit data.census.gov.
Free data download: Get all Mississippi city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Bay St. Louis city, Mississippi?
Bay St. Louis city, Mississippi has a population of 9,971 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Bay St. Louis city, MS?
The median household income in Bay St. Louis city is $70,082, which is 11% lower the national median of $78,538.
What is the poverty rate in Bay St. Louis city, MS?
The poverty rate in Bay St. Louis city is 13.7%. This means approximately 1,343 residents live below the federal poverty line.
What is the racial makeup of Bay St. Louis city, Mississippi?
Bay St. Louis city's population is 75.0% White, 15.1% Black, 4.0% Hispanic/Latino, and 1.4% Asian.
What is the median home value in Bay St. Louis city, MS?
The median home value in Bay St. Louis city is $231,900. The home-value-to-income ratio is 3.3x.
How educated is Bay St. Louis city, Mississippi?
35.2% of adults (25+) in Bay St. Louis city hold a bachelor's degree or higher, and 15.2% hold a graduate or professional degree.