Merrick is located in southeast New York. Merrick is part of Nassau County. Merrick has 4.02 square miles of land area and 1.13 square miles of water area. As of 2010-2014, the total Merrick population is 21,293, which has shrunk 6.46% since 2000. The population growth rate is much lower than the state average rate of 3.26% and is much lower than the national average rate of 11.61%. Merrick median household income is $133,047 in 2010-2014 and has grown by 42.86% since 2000. The income growth rate is higher than the state average rate of 35.25% and is much higher than the national average rate of 27.36%. Merrick median house value is $521,800 in 2010-2014 and has grown by 81.31% since 2000. The house value growth rate is lower than the state average rate of 90.79% 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 Merrick is much better than the state average in quality. The Merrick area code is 516.