Clarendon is located in northwest Pennsylvania. Clarendon is part of Warren County. Clarendon has 0.34 square miles of land area and has no water area. As of 2010-2014, the total Clarendon population is 519, which has shrunk 7.98% since 2000. The population growth rate is much lower than the state average rate of 3.89% and is much lower than the national average rate of 11.61%. Clarendon median household income is $37,188 in 2010-2014 and has grown by 34.01% since 2000. The income growth rate is about the same as the state average rate of 32.44% and is higher than the national average rate of 27.36%. Clarendon median house value is $58,300 in 2010-2014 and has grown by 47.59% since 2000. The house value growth rate is lower than the state average rate of 70.00% and is about the same as 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 Clarendon is close to the state average in quality. The Clarendon area code is 814.