Marlborough is located in east Missouri. Marlborough has 0.23 square miles of land area and has no water area. As of 2010-2014, the total Marlborough population is 2,206, which has shrunk 1.30% since 2000. The population growth rate is much lower than the state average rate of 7.74% and is much lower than the national average rate of 11.61%. Marlborough median household income is $36,763 in 2010-2014 and has grown by 44.82% since 2000. The income growth rate is much higher than the state average rate of 25.91% and is much higher than the national average rate of 27.36%. Marlborough median house value is $124,100 in 2010-2014 and has grown by 32.59% since 2000. The house value growth rate is much lower than the state average rate of 52.06% 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 Marlborough is better than the state average in quality.