20640 Zip Code
20640 zip code is located close to the center of Maryland. 20640 zip code is part of Charles County. 20640 zip code has 41.69 square miles of land area and 7.12 square miles of water area. As of 2010-2014, the total 20640 zip code population is 10,579, which has grown 27.87% since 2000. The population growth rate is much higher than the state average rate of 11.16% and is much higher than the national average rate of 11.61%. 20640 zip code median household income is $61,563 in 2010-2014 and has grown by 32.04% since 2000. The income growth rate is lower than the state average rate of 40.25% and is higher than the national average rate of 27.36%. 20640 zip code median house value is $243,600 in 2010-2014 and has grown by 107.14% 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 20640 zip code is worse than the state average in quality. The 20640 zip code area codes are 240, 301.
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