Blackwell is located close to the center of Oklahoma. Blackwell is between the Kay, Grant county. Blackwell has 5.49 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Blackwell population is 6,957, which has shrunk 9.27% 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%. Blackwell median household income is $40,750 in 2010-2014 and has grown by 57.73% since 2000. The income growth rate is much higher than the state average rate of 38.43% and is much higher than the national average rate of 27.36%. Blackwell median house value is $48,600 in 2010-2014 and has grown by 34.63% since 2000. The house value growth rate is much lower than the state average rate of 62.66% and is lower 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 Blackwell is much better than the state average in quality. The Blackwell area code is 580.