Mifflinville is located in east Pennsylvania. Mifflinville is part of Columbia County. Mifflinville has 1.37 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Mifflinville population is 1,345, which has grown 10.88% since 2000. The population growth rate is much higher than the state average rate of 3.89% and is lower than the national average rate of 11.61%. Mifflinville median household income is $53,405 in 2010-2014 and has grown by 43.37% since 2000. The income growth rate is higher than the state average rate of 32.44% and is much higher than the national average rate of 27.36%. Mifflinville median house value is $145,600 in 2010-2014 and has grown by 62.68% 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 Mifflinville is better than the state average in quality. The Mifflinville area code is 570.