The 2016 Harwich, Massachusetts, population is 12,180. There are 583 people per square mile (population density).
The median age is 50.9. The US median is 37.4. 55.71% of people in Harwich, Massachusetts, are married. 9.71% are divorced.
The average household size is 2.24 people. 21.15% of people are married, with children. 10.83% have children, but are single.
92.06% of people are white, 1.95% are black, 2.55% are asian, 0.00% are native american, and 0.54% claim 'Other'.
1.83% of the people in Harwich, Massachusetts, claim hispanic ethnicity (meaning 98.17% are non-hispanic).
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