Duke Center cost of living score 70.6 Less expensive 29.4% lower than the US average 25.4% lower than the Pennsylvania average Duke Center (zip 16729), Pennsylvania gets a BestPlaces Cost of Living score of 70.6, which means the total cost of housing, food, childcare, transportation, healthcare, taxes, and other necessities is 29.4% lower than the U.S. average and 25.4% higher than the average for Pennsylvania.