Pierre Part (French: Ville de Pierre Part) is a census-designated place (CDP) in Assumption Parish, Louisiana, United States. The population was 3,169 at the 2010 census, making it the most populous community in Assumption Parish. With 39.3 percent of the population speaking French at home, Pierre Part is the most French town in the United States (by percentage) outside of Maine. Pierre Part is known locally for its prominent French influence and ancestry, which have become significant aspects of its contemporary local culture. Situated near Lake Verret, Pierre Part is a popular local destination for water sports and fishing during the summer.
Pierre Part is located at 29°57′40″N 91°12′24″W / 29.96111°N 91.20667°W / 29.96111; -91.20667 (29.960975, -91.206612). According to the United States Census Bureau, the CDP has a total area of 3.08 square miles (7.98 km), of which 3.07 square miles (7.95 km) is land and 0.012 square miles (0.03 km), or 0.37%, is water.
As of the census of 2010, there were 3,169 people, 1,288 households, and 916 families residing in the CDP. The population density was 1,000 people per square mile (400/km²).There were 1,355 housing units at an average density of 448.6 per square mile (173.2/km²). The racial makeup of the CDP was 98.6% White, 0.03% African American, 0.22% Native American, and 0.9% from two or more races. Hispanic or Latino of any race amounted to 1.0% of the population. In 2005, 60.7% of the population over age 5 spoke English at home, and 38.8% of the population spoke French.
There were 1,236 households out of which 39.4% had children under the age of 18 living with them, 62.0% were married couples living together, 9.7% had a female householder with no husband present, and 24.9% were non-families. 22.1% of all households were made up of individuals and 9.8% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.06.
In the CDP, the population was spread out with 27.3% under the age of 18, 9.4% from 18 to 24, 29.9% from 25 to 44, 22.2% from 45 to 64, and 11.2% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 94.5 males. For every 100 females age 18 and over, there were 91.9 males.
In 2017, the median household income for Pierre Part was $82,646, and the median income for a family was $90,721. Males had a median income of $69,203 versus 33,371 for females. The per capita income for the CDP was $32,875. 8.3% of families and 11.2% of the population were below the poverty line, including 12.2% of those under age 18 and 9.1% of those age 65 and over.
As of 2017, 53.4% of people residing in Pierre Part reported French ancestry. 13.1% had French Canadian ancestry. A total of 7.1% of residents declared German ancestry, which was followed by 6.0% Irish ancestry and 4.0% English ancestry. 1.7% of individuals reported having Irish ancestry.
In the CDP, 74.1% of households had a computer, and 73.9% of residents regularly used the Internet.