| Place Name | Harwich |
| Place Type | Town |
| ZIP Code(s) | 02645 |
| County | Barnstable County |
| Area Code(s) | 508,774 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 13,329 |
| Majority Ethnicity | White 96.17% |
| Metro/Micro Stats Area | Barnstable Town, MA |
| US Congressional District(s) | Massachusetts 9th |
| State House Districts | 4th Barnstable |
| State Senate Districts | Cape and Islands |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.17% |
| African American | 1.71% |
| Hispanic | 0% |
| Asian | 0.29% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.83% |