Knox is located in west Pennsylvania. Knox is between the Clarion, Venango county. Knox has 0.56 square miles of land area and 0.00 square miles of water area. As of 2010-2014, the total Knox population is 1,098, which has shrunk 6.63% 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%. Knox median household income is $43,750 in 2010-2014 and has grown by 35.00% since 2000. The income growth rate is higher than the state average rate of 32.44% and is higher than the national average rate of 27.36%. Knox median house value is $101,900 in 2010-2014 and has grown by 54.86% since 2000. The house value growth rate is lower than the state average rate of 70.00% and is 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 Knox is better than the state average in quality. The Knox area code is 814.