Interlaken is located in east New Jersey. Interlaken is part of Monmouth County. Interlaken has 0.33 square miles of land area and 0.05 square miles of water area. As of 2010-2014, the total Interlaken population is 826, which has shrunk 8.22% since 2000. The population growth rate is much lower than the state average rate of 5.47% and is much lower than the national average rate of 11.61%. Interlaken median household income is $134,167 in 2010-2014 and has grown by 61.96% since 2000. The income growth rate is much higher than the state average rate of 30.67% and is much higher than the national average rate of 27.36%. Interlaken median house value is $642,200 in 2010-2014 and has grown by 128.87% since 2000. The house value growth rate is higher than the state average rate of 87.30% 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 Interlaken is much better than the state average in quality.