Vassalboro cost of living score 88.6 Less expensive 11.4% lower than the US average 8.7% lower than the Maine average Vassalboro (zip 04989), Maine gets a BestPlaces Cost of Living score of 88.6, which means the total cost of housing, food, childcare, transportation, healthcare, taxes, and other necessities is 11.4% lower than the U.S. average and 8.7% higher than the average for Maine.