Grimes is located close to the center of Iowa. Grimes is between the Polk, Dallas county. Grimes has 11.84 square miles of land area and 0.03 square miles of water area. As of 2010-2014, the total Grimes population is 9,037, which has grown 77.27% since 2000. The population growth rate is much higher than the state average rate of 5.19% and is much higher than the national average rate of 11.61%. Grimes median household income is $78,504 in 2010-2014 and has grown by 39.50% since 2000. The income growth rate is higher than the state average rate of 33.56% and is higher than the national average rate of 27.36%. Grimes median house value is $172,000 in 2010-2014 and has grown by 43.93% since 2000. The house value growth rate is lower than the state average rate of 53.09% 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 Grimes is much better than the state average in quality. The Grimes area code is 515.