St. Mary County, Louisiana Facts
| Facts | |
| State | Louisiana |
| Land area | 555.4 square miles |
| Population Density | 98.4 persons per square mile. |
| Population | |
| Population (2013) | 53,543 |
| Population change | -2% | Under 5 years of age | 6.8% |
| Under 18 | 24.7% |
| 65 and over | 14% |
| Females | 50.5% |
| White | 61.8 |
| Hispanic or Latino of any race | 6.2 |
| Asian | 1.7% |
| Two or more races | 1.8% |
| Black or African American | 32.7% |
| Native American | 1.9% |
| Pacific Islander | 0.1% |
| Had graduated from high school | 73% |
| Had a bachelor’s degree or higher | 10.8% |
| Veterans | 3,574 |
| Households and Housing | |
| Households | 20,092 |
| Persons per household | 2.7 |
| Living in the same house for one year or more | 86.1% |
| Median household income | $41,571 |
| The per capita income | $21,313 |
| Live below the poverty line. | 21% |
| housing units | 23,018 |
| Multi-unit structures | 11% |
| The median value of owner-occupied housing | $88,800 |
| Residents owning their homes. | 69.7% |
| Business Facts | |
| Total number of firms | 4,409 |
| Women-owned firms | 18.7% |
| Asian-owned firms | 0% |
| Hispanic-owned firms | 0% |
| Black-owned firms | 17.5% |
| Native American-owned firms | 0% |
| Pacific Islander-owned firms | 0% |
| Retail sales | $508,177 |
| Retail sales per capita | $9,933 |
| Manufacturers shipments | $2,011,102 |
| Merchant wholesaler sales | $0 |