Harwich Real EstateHarwich is located in Massachusetts. Harwich, Massachusetts has a population of 12,143. Harwich is less family-centric than the surrounding county with 19.03% of the households containing married families with children. The county average for households married with children is 21.28%. The median household income in Harwich, Massachusetts is $73,468. The median household income for the surrounding county is $68,048 compared to the national median of $57,652. The median age of people living in Harwich is 55.6 years. Harwich WeatherThe average high temperature in July is 78.7 degrees, with an average low temperature in January of 23.7 degrees. The average rainfall is approximately 47.7 inches per year, with 28.9 inches of snow per year. Harwich MapReal estate near HarwichNearby CitiesNearby Cities Homes for Sale |