Calais cost of living score 77.1 Less expensive 22.9% lower than the US average 20.5% lower than the Maine average Calais (zip 04619), Maine gets a BestPlaces Cost of Living score of 77.1, which means the total cost of housing, food, childcare, transportation, healthcare, taxes, and other necessities is 22.9% lower than the U.S. average and 20.5% higher than the average for Maine.