| Place Name | Harlem Township (Winnebago County) |
| Place Type | Township |
| ZIP Code(s) | 61011 61073 61111 61115 |
| County | Winnebago County |
| Area Code(s) | 815,779 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 39,155 |
| Majority Ethnicity | White 85.5% |
| Metro/Micro Stats Area | Rockford, IL |
| US Congressional District(s) | Illinois 16th |
| State House Districts | 68,69 |
| State Senate Districts | 34,35 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 85.5% |
| African American | 4.78% |
| Hispanic | 0.02% |
| Asian | 2.81% |
| Native American | 0.03% |
| Hawaiin/Pacific Islander | 6.87% |