21555 Zip Code
21555 zip code is located in west Maryland. 21555 zip code is part of Allegany County. 21555 zip code has 105.96 square miles of land area and 2.27 square miles of water area. As of 2010-2014, the total 21555 zip code population is 1,861, which has shrunk 3.17% since 2000. The population growth rate is much lower than the state average rate of 11.16% and is much lower than the national average rate of 11.61%. 21555 zip code median household income is $56,625 in 2010-2014 and has grown by 50.06% 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%. 21555 zip code median house value is $126,600 in 2010-2014 and has grown by 68.58% since 2000. The house value growth rate is lower than the state average rate of 96.92% 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 21555 zip code is close to the state average in quality. The 21555 zip code area code is 301.