St. Mary   County LA United States

County FIPS 22101
Largest City Morgan City
State Louisiana
Latitude 29.7207
Longitude -91.4486
Population 47,828
Density 85.65 people per square mile
Time Zone America/Chicago
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $52,576
Median individual: $29,953

Race

Mode: 56.9% White

Gender

 51.4% female 

Rent

  $848 / month  

Median house value: $132,310.0

Age

Median: 39.7 years old

Education

With at least college degree: 13.6%
With STEM degree: 32.4%

Marital Status

 42.6% married 

Never married: 35.4%

Labor Force Participation

 54.2% working 

Unemployed: 5.4%

Average Family Size

 3.22 people 

Commute Time

 23.2 minutes 

Health Care

 8.5% uninsured 

Poverty

 20.8%

All data comes from the SimpleMaps US Counties Database, 2026.

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