Sulphur is located in southwest Louisiana. Sulphur is part of Calcasieu County. Sulphur has 9.99 square miles of land area and has no water area. As of 2010-2014, the total Sulphur population is 20,275, which has shrunk 1.16% since 2000. The population growth rate is lower than the state average rate of 2.96% and is much lower than the national average rate of 11.61%. Sulphur median household income is $46,780 in 2010-2014 and has grown by 22.31% since 2000. The income growth rate is much lower than the state average rate of 38.15% and is lower than the national average rate of 27.36%. Sulphur median house value is $115,300 in 2010-2014 and has grown by 48.01% since 2000. The house value growth rate is lower than the state average rate of 65.18% and is about the same as the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Sulphur is better than the state average in quality. The Sulphur area code is 337.