Sulphur is located close to the center of Oklahoma. Sulphur is part of Murray County. Sulphur has 6.70 square miles of land area and 0.18 square miles of water area. As of 2010-2014, the total Sulphur population is 4,996, which has grown 4.21% since 2000. The population growth rate is much lower than the state average rate of 10.67% and is much lower than the national average rate of 11.61%. Sulphur median household income is $41,440 in 2010-2014 and has grown by 52.15% since 2000. The income growth rate is higher than the state average rate of 38.43% and is much higher than the national average rate of 27.36%. Sulphur median house value is $75,700 in 2010-2014 and has grown by 62.10% since 2000. The house value growth rate is about the same as the state average rate of 62.66% and is higher than 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 580.