21771 Zip Code
21771 zip code is located close to the center of Maryland. 21771 zip code is between the Frederick, Carroll, Howard, Montgomery county. 21771 zip code has 85.06 square miles of land area and 0.17 square miles of water area. As of 2010-2014, the total 21771 zip code population is 29,558, which has grown 15.04% since 2000. The population growth rate is higher than the state average rate of 11.16% and is higher than the national average rate of 11.61%. 21771 zip code median household income is $110,190 in 2010-2014 and has grown by 44.71% since 2000. The income growth rate is higher than the state average rate of 40.25% and is much higher than the national average rate of 27.36%. 21771 zip code median house value is $395,700 in 2010-2014 and has grown by 101.27% since 2000. The house value growth rate is about the same as the state average rate of 96.92% and is much 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 21771 zip code is much better than the state average in quality. The 21771 zip code area codes are 240, 301.
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