Greenfield is located close to the center of Oklahoma. Greenfield is part of Blaine County. Greenfield has 0.13 square miles of land area and has no water area. As of 2010-2014, the total Greenfield population is 97, which has shrunk 21.14% 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%. Greenfield median household income is $36,875 in 2010-2014 and has grown by 78.19% 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%. Greenfield median house value is $33,900 in 2010-2014 and has grown by 40.08% 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 Greenfield is worse than the state average in quality. The Greenfield area code is 580.