21797 Zip Code
21797 zip code is located close to the center of Maryland. 21797 zip code is between the Howard, Carroll, Montgomery county. 21797 zip code has 43.28 square miles of land area and 0.23 square miles of water area. As of 2010-2014, the total 21797 zip code population is 8,160, which has grown 9.19% since 2000. The population growth rate is lower than the state average rate of 11.16% and is lower than the national average rate of 11.61%. 21797 zip code median household income is $132,000 in 2010-2014 and has grown by 81.82% since 2000. The income growth rate is much higher than the state average rate of 40.25% and is much higher than the national average rate of 27.36%. 21797 zip code median house value is $539,200 in 2010-2014 and has grown by 119.28% since 2000. The house value growth rate is higher than 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 21797 zip code is much better than the state average in quality. The 21797 zip code area code is 410.