Mount Holly cost of living score 90.1 Less expensive 9.9% lower than the US average 10.6% lower than the Vermont average Mount Holly (zip 05758), Vermont gets a BestPlaces Cost of Living score of 90.1, which means the total cost of housing, food, childcare, transportation, healthcare, taxes, and other necessities is 9.9% lower than the U.S. average and 10.6% lower than the average for Vermont.