It sounds like you are paying way too much. In PA property taxes are complicated. There's county tax, school tax, and other taxes. Go to your county and township websites and find out what your tax rate should be, the mil rate that is. Then look at your tax bills and see what you are paying. There must be a mistake somewhere. In our township, we pay about 2.5% between township and school taxes.
An example: In 2010 we went through reassessment and realized our house was over assessed by 25%, as well as most of the houses. Our county used a faulty formula. We had our house appraised for tax purposes, submitted a report to the county, and had our taxes reduced significantly. The folks working at the assessor office also live here. They were amazingly cooperative. I remember lines out the door that year in the assessor's office due to the mistake. Some people I know didn't seem to care. We did. We spent a few hundreds and saved thousands.