Greenfield is located close to the center of California. Greenfield is part of Monterey County. Greenfield has 2.14 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Greenfield population is 16,715, which has grown 32.84% since 2000. The population growth rate is much higher than the state average rate of 12.39% and is much higher than the national average rate of 11.61%. Greenfield median household income is $52,374 in 2010-2014 and has grown by 39.29% since 2000. The income growth rate is higher than the state average rate of 29.47% and is higher than the national average rate of 27.36%. Greenfield median house value is $174,200 in 2010-2014 and has grown by 39.03% since 2000. The house value growth rate is much lower than the state average rate of 75.60% 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 831.