Markham is located in southeast Texas. Markham is part of Matagorda County. Markham has 2.25 square miles of land area and 0.02 square miles of water area. As of 2010-2014, the total Markham population is 1,242, which has grown 9.14% since 2000. The population growth rate is much lower than the state average rate of 25.13% and is lower than the national average rate of 11.61%. Markham median household income is $43,787 in 2010-2014 and has grown by 4.50% since 2000. The income growth rate is much lower than the state average rate of 31.68% and is much lower than the national average rate of 27.36%. Markham median house value is $70,000 in 2010-2014 and has grown by 51.84% since 2000. The house value growth rate is lower than the state average rate of 59.27% and is higher 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 Markham is close to the state average in quality. The Markham area code is 979.