| Place Name | Harlem Township |
| Place Type | Township |
| ZIP Code(s) | 43021 43031 43054 43074 43082 |
| County | Delaware County |
| Area Code(s) | 220,740,380,614 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 4,519 |
| Majority Ethnicity | White 94.89% |
| Metro/Micro Stats Area | Columbus, OH |
| US Congressional District(s) | Ohio 12th |
| State House Districts | 68 |
| State Senate Districts | 19 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.89% |
| African American | 0.82% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.3% |