Castle is located close to the center of Oklahoma. Castle is part of Okfuskee County. Castle has 0.18 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Castle population is 124, which has grown 1.64% 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%. Castle median household income is $35,500 in 2010-2014 and has grown by 43.79% 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%. Castle median house value is $40,800 in 2010-2014 and has grown by 104.00% 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 Castle is worse than the state average in quality. The Castle area code is 918.