Picayune (/pɪkəˈjuːn/ pik-ə-YOON) is the largest city in Pearl River County, Mississippi, United States. The population was 10,878 at the 2010 census. Picayune was added to the New Orleans metropolitan area in 2014. The city is located approximately 45 miles (72 km) from New Orleans, Hattiesburg and Gulfport-Biloxi. The Stennis Space Center is 10 miles (16 km) away.
According to the United States Census Bureau, the city has a total area of 11.8 square miles (31 km), of which 11.8 square miles (31 km) is land and 0.04 square miles (0.10 km) (7.34%) is water.
As of the census of 2000, there were 10,535 people, 4,100 households, and 2,865 families residing in the city. The population density was 895.6 people per square mile (345.9/km²). There were 4,568 housing units at an average density of 388.3 per square mile (150.0/km²). The racial makeup of the city was 62.02% White, 35.92% African American, 0.38% Native American, 0.30% Asian, 0.05% Pacific Islander, 0.18% from other races, and 1.15% from two or more races. Hispanic or Latino of any race were 1.15% of the population.
There were 4,100 households out of which 31.8% had a children under the age of 18 living with them, 45.0% were married couples living together, 20.8% had a female householder with no husband present, and 30.1% were non-families. 26.4% of all households were made up of individuals and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.06.
In the city, the population was spread out with 27.0% under the age of 18, 9.4% from 18 to 24, 25.5% from 25 to 44, 23.0% from 45 to 64, and 15.1% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 82.8 males. For every 100 females age 18 and over, there were 79.2 males.
The median income for a household in the city is $26,958, and the median income for a family was $33,260. Males had a median income of $31,438 versus $20,035 for females. The per capita income for the city was $15,798. About 18.9% of families and 20.8% of the population were below the poverty line, including 28.2% of those under age 18 and 17.6% of those age 65 or over.