North Valley Stream cost of living score 160.6 More expensive 60.6% higher than the US average 32.2% higher than the New York average North Valley Stream, New York gets a BestPlaces Cost of Living score of 160.6, which means the total cost of housing, food, childcare, transportation, healthcare, taxes, and other necessities is 60.6% higher than the U.S. average and 32.2% lower than the average for New York.