St. Joseph, often called St. Joe, is a town in and the parish seat of rural Tensas Parish in northeastern Louisiana, United States, in the delta of the Mississippi River. The population was 1,340 at the 2000 census, which declined by 12.2 percent to 1,176 in 2010. The town had an African-American majority of 77.4 percent in 2010.
St. Joseph is located at 31°55′7″N 91°14′18″W / 31.91861°N 91.23833°W / 31.91861; -91.23833 (31.918513, -91.238284).
According to the United States Census Bureau, the town has a total area of 0.9 square mile (2.3 km²), all land.
As of the census of 2000, there were 1,340 people, 500 households, and 337 families residing in the town. The population density was 1,505.2 people per square mile (581.3/km²). There were 607 housing units at an average density of 681.9 per square mile (263.3/km²). The racial makeup of the town was 68.58% African American, 29.78% White, 0.22% Asian, 1.04% from two or more races, 00.07% Native American, and 0.30% from other races. Hispanic or Latino of any race were 0.75% of the population.
There were 500 households out of which 32.2% had children under the age of 18 living with them, 38.2% were married couples living together, 25.0% had a female householder with no husband present, and 32.4% were non-families. 29.2% of all households were made up of individuals and 14.4% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.29.
In the town, the population was spread out with 30.5% under the age of 18, 10.4% from 18 to 24, 26.0% from 25 to 44, 19.7% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 83.8 males. For every 100 females age 18 and over, there were 80.4 males.
The median income for a household in the town was $19,539, and the median income for a family was $22,935. Males had a median income of $22,321 versus $15,288 for females. The per capita income for the town was $9,049. About 33.0% of families and 37.8% of the population were below the poverty line, including 47.5% of those under age 18 and 33.3% of those age 65 or over.