Sentinel is located close to the center of Oklahoma. Sentinel is part of Washita County. Sentinel has 0.62 square miles of land area and has no water area. As of 2010-2014, the total Sentinel population is 972, which has grown 13.15% since 2000. The population growth rate is higher than the state average rate of 10.67% and is higher than the national average rate of 11.61%. Sentinel median household income is $38,906 in 2010-2014 and has grown by 32.94% since 2000. The income growth rate is lower than the state average rate of 38.43% and is higher than the national average rate of 27.36%. Sentinel median house value is $60,900 in 2010-2014 and has grown by 99.02% since 2000. The house value growth rate is much higher than the state average rate of 62.66% and is much 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 Sentinel is much better than the state average in quality. The Sentinel area code is 580.