21540 Zip Code
21540 zip code is located in west Maryland. 21540 zip code is part of Allegany County. 21540 zip code has 0.27 square miles of land area and 0.04 square miles of water area. As of 2010-2014, the total 21540 zip code population is 91, which has grown 13.75% 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%. 21540 zip code median household income is $41,875 in 2010-2014 and has grown by 95.62% 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%. 21540 zip code median house value is $30,700 in 2010-2014 and has grown by -12.29% since 2000. The house value growth rate is much lower than the state average rate of 96.92% and is much 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 21540 zip code is close to the state average in quality. The 21540 zip code area codes are 301, 410.