New Marlboro Real EstateNew Marlboro is located in Massachusetts. New Marlboro, Massachusetts has a population of 3,584. The median household income in New Marlboro, Massachusetts is $65,192. The median household income for the surrounding county is $63,159 compared to the national median of $69,021. The median age of people living in New Marlboro is 46.9 years. New Marlboro WeatherThe average high temperature in July is 82.4 degrees, with an average low temperature in January of 12.5 degrees. The average rainfall is approximately 46.6 inches per year, with 54.6 inches of snow per year. New Marlboro MapReal estate near New MarlboroNearby CitiesNearby Cities Homes for Sale |