01821 Zip Code
01821 zip code is located close to the center of Massachusetts. 01821 zip code is part of Middlesex County. 01821 zip code has 16.57 square miles of land area and 0.40 square miles of water area. As of 2010-2014, the total 01821 zip code population is 31,157, which has grown 5.95% since 2000. The population growth rate is higher than the state average rate of 4.85% and is much lower than the national average rate of 11.61%. 01821 zip code median household income is $91,605 in 2010-2014 and has grown by 34.94% since 2000. The income growth rate is about the same as the state average rate of 34.34% and is higher than the national average rate of 27.36%. 01821 zip code median house value is $340,700 in 2010-2014 and has grown by 68.08% since 2000. The house value growth rate is lower than the state average rate of 77.65% 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 01821 zip code is close to the state average in quality. The 01821 zip code area code is 978.