Matlock is located in northwest Iowa. Matlock is part of Sioux County. Matlock has 0.37 square miles of land area and has no water area. As of 2010-2014, the total Matlock population is 94, which has grown 13.25% since 2000. The population growth rate is much higher than the state average rate of 5.19% and is higher than the national average rate of 11.61%. Matlock median household income is $70,625 in 2010-2014 and has grown by 92.18% since 2000. The income growth rate is much higher than the state average rate of 33.56% and is much higher than the national average rate of 27.36%. Matlock median house value is $55,700 in 2010-2014 and has grown by 27.17% since 2000. The house value growth rate is much lower than the state average rate of 53.09% and is much 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 Matlock is much better than the state average in quality. The Matlock area code is 712.