Sulphur (French: Soufre) is a city in Calcasieu Parish, Louisiana, United States. The population was 20,410 at the 2010 census. Sulphur is part of the Lake Charles Metropolitan Statistical Area.
Sulphur is located near the center of Calcasieu Parish. The city lies on Interstate 10 between the towns of Vinton and Westlake, approximately 20 miles (32 km) east of the Texas border. The city of Lake Charles is 9 miles (14 km) to the east. U.S. Route 90 passes through the center of Sulphur as Napoleon Street. Access from I-10 is via exits 20, 21, 23, and 26. According to the United States Census Bureau, the city has a total area of 10.0 square miles (25.9 km), all land.
Communities inside Sulphur city limits include, from west to east, old Sulphur, Hollywood, and Maplewood, as well as Northwest Sulphur, also known as Portie Town, but usually pronounced with the Cajun form of pō-chay or Pohchay town. Outside of city limits are the communities of Carlyss and Choupique (Shoe-peak). Like the bowfin, that has many alternate names, the word “Choupique” has several variations of pronunciation in south Louisiana. Choupique is also pronounced shoe-pick, shoe-peg, or chew-pic. Moss Lake to the south. The community of Houston River is north of town, and Mossville is east of town, all but a memory with Sasol’s purchase of over 4 square miles of land, that included with a few property exceptions, the entire community of Mossville. Most new development in the city is taking place south of town in Carlyss or around I-10.
As of the census of 2000, there were 20,512 people, 7,901 households, and 5,601 families residing in the city. The population density was 2,043.0 people per square mile (788.8/km²). There were 8,665 housing units at an average density of 863.0 per square mile (333.2/km²).
The racial makeup of the city was 93.43% White, 5.41% African American, 0.33% Native American, 0.37% Asian, 0.04% Pacific Islander, 0.35% from other races, and 1.06% from two or more races. Hispanic or Latino of any race were 1.49% of the population.
There were 7,901 households, out of which 34.6% had children under the age of 18 living with them, 53.2% were married couples living together, 13.8% had a female householder with no husband present, and 29.1% were non-families. 24.9% of all households were made up of individuals and 10.1% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.06.
In the city, the population was spread out with 27.1% under the age of 18, 9.5% from 18 to 24, 28.2% from 25 to 44, 21.7% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 92.1 males. For every 100 females age 18 and over, there were 88.9 males.
The median income for a household in the city was $38,247, and the median income for a family was $45,455. Males had a median income of $38,235 versus $22,500 for females. The per capita income for the city was $21,615. About 7.5% of families and 9.3% of the population were below the poverty line, including 10.0% of those under age 18 and 11.5% of those age 65 or over.
Sulphur Louisiana neighborhoods include: Barcelona, Diane Dr, Forest Hills, Forest Park, Frasch Park, Hollywood, Horseshoe, Koonce Settlement, Maplewood, Mimosa, N Boudoin/S Beglis, Neck of Woods, North Moss Lake, Northwest Carlyss, Prater Road, Roseland Acres, San Ann St, Spiller Estates, The Grove, The Street, Trailerhood, Villa Maria