|Elevation||13 ft (4 m)|
|Area||7.9 sq mi (20.5 km2)|
|- land||6.9 sq mi (18 km2)|
|- water||0.9 sq mi (2 km2), 11.39%|
|Density||1,042.8 / sq mi (402.6 / km2)|
|- summer (DST)||CDT (UTC-5)|
Prien is a census-designated place (CDP) in Calcasieu Parish, Louisiana, United States. The population was 7,810 at the 2010 census and continues to grow. It is part of the Lake Charles Metropolitan Statistical Area. Some of the area has been annexed into the City of Lake Charles to facilitate growth.
Prien is located at .(30.171700, -93.267384)
According to the United States Census Bureau, the CDP has a total area of 7.9 square miles (20.4 km²), of which, 6.9 square miles (17.9 km²) of it is land and 0.9 square miles (2.4 km²) of it (11.96%) is water.
This unincorporated area continues to grow, while much of it has been annexed by the City of Lake Charles, Louisiana.
As of the census of 2010, there were 7,810 people, 2,595 households, and 2,050 families residing in the CDP. The population density was 1,042.8 people per square mile (402.6/km²). There were 2,712 housing units at an average density of 392.0 per square mile (151.3/km²). The racial makeup of the CDP was 85.4% White, 7.4% African American, 0.4% Native American, 3.3% Asian, 0.1% Pacific Islander, 0.65% from other races, and 2.4% from two or more races. Hispanic or Latino of any race were 2.2% of the population.
There were 2,595 households out of which 26.0% had children under the age of 18 living with them, 65.3% were married couples living together, 10.3% had a female householder with no husband present, and 20.6% were non-families. 16.9% of all households were made up of individuals and 11.2% had someone living alone who was 65 years of age or older. The average household size was 2.79 and the average family size was 3.15.
In the CDP the population was spread out with 30.0% under the age of 18, 7.9% from 18 to 24, 31.2% from 25 to 44, 22.4% from 45 to 64, and 8.5% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 95.7 males. For every 100 females age 18 and over, there were 93.3 males.
The median income for a household in the CDP was $62,654, and the median income for a family was $61,295. Males had a median income of $50,201 versus $24,515 for females. The per capita income for the CDP was $26,537. About 3.7% of the population were below the poverty line, including 8.7% of those under age 18 and 12.7% of those age 65 or over.