Grandfield is located in southwest Oklahoma. Grandfield is between the Tillman, Cotton county. Grandfield has 0.84 square miles of land area and has no water area. As of 2010-2014, the total Grandfield population is 1,018, which has shrunk 8.29% 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%. Grandfield median household income is $37,697 in 2010-2014 and has grown by 75.33% 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%. Grandfield median house value is $46,600 in 2010-2014 and has grown by 47.47% since 2000. The house value growth rate is lower than the state average rate of 62.66% and is about the same as 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 Grandfield is worse than the state average in quality. The Grandfield area code is 580.