Delaware is located in northeast Oklahoma. Delaware is part of Nowata County. Delaware has 0.38 square miles of land area and has no water area. As of 2010-2014, the total Delaware population is 285, which has shrunk 37.50% 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%. Delaware median household income is $34,167 in 2010-2014 and has grown by 21.30% since 2000. The income growth rate is much lower than the state average rate of 38.43% and is lower than the national average rate of 27.36%. Delaware median house value is $44,700 in 2010-2014 and has grown by 107.91% 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 Delaware is close to the state average in quality. The Delaware area code is 918.