Kenilworth is located in northeast New Jersey. Kenilworth is part of Union County. Kenilworth has 2.16 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Kenilworth population is 8,045, which has grown 4.82% since 2000. The population growth rate is lower than the state average rate of 5.47% and is much lower than the national average rate of 11.61%. Kenilworth median household income is $100,680 in 2010-2014 and has grown by 68.00% 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%. Kenilworth median house value is $351,900 in 2010-2014 and has grown by 100.06% 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 Kenilworth is close to the state average in quality. The Kenilworth area code is 908.