St. Martinville is a city in, and the parish seat of, St. Martin Parish, Louisiana, United States. It lies on Bayou Teche, sixteen miles south of Breaux Bridge, eighteen miles southeast of Lafayette, and nine miles north of New Iberia. The population was 6,114 at the 2010 census, down from 6,989 in 2000. It is part of the Lafayette Metropolitan Statistical Area.
St. Martinville is located at 30°7′30″N 91°49′50″W / 30.12500°N 91.83056°W / 30.12500; -91.83056 (30.125053, -91.830593).
According to the United States Census Bureau, the city has a total area of 3.0 square miles (7.8 km²), of which 3.0 square miles (7.8 km²) is land and 0.33% is water. Its terrain is mixture of swamp and prairie.
As of the census of 2010, there were 6,114 people, 2,320 households, and 1,533 families residing in the city. The population density was 2,038 people per square mile (899.5/km²). There were 2,588 housing units at an average density of 862.67 per square mile (357.5/km²). The racial makeup of the city was 35.3% White, 62.7% African American, 0.20% Native American, 0.1% Asian, 0.2% from other races, and 1.3% from two or more races. Hispanic or Latino of any race were 1.4% of the population. In 2005, 81.1% of the population over the age of five spoke only English at home, 15.9% of the population spoke French, and 2.7% spoke Louisiana Creole French.
There were 2,320 households out of which 27.7% had children under the age of 18 living with them, 31.5% were married couples living together, 28.7% had a female householder with no husband present, and 33.9% were non-families. 28.7% of all households were made up of individuals and 12.4% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.13.
In the city, the population was spread out with 24.9% under the age of 18, 6.6% from 20 to 24, 22.8% from 25 to 44, 26.9% from 45 to 64, and 15.8% who were 65 years of age or older. The median age was 38.8 years. For every 100 females, there were 85.8 males. For every 100 females age 18 and over, there were 80.7 males.
The median income for a household in the city was $24,246 and the median income for a family was $33,009. Males had a median income of $30,710 versus $33,455 for females. The per capita income for the city was $17,835. About 24.6% of families and 29.4% of the population were below the poverty line, including 50.2% of those under age 18 and 16.2% of those age 65 or over.
St Martinville Louisiana neighborhoods include: Burdin, Cade, Camille Drive, Carmen Drive, Catahoula Church to Park, Cemetery, Durand/District 2, Francis Loop, Isle Labbe, Lil Nam, Loreauville, Nursery, Papit Guidry Rd, Ruth Bridge