| Place Name | Big Rock Township |
| Place Type | Township |
| ZIP Code(s) | 60119 60511 60545 60554 |
| County | Kane County |
| Area Code(s) | 331,630,815,779 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 1,885 |
| Majority Ethnicity | White 94.87% |
| Metro/Micro Stats Area | Chicago-Naperville-Elgin, IL-IN-WI |
| US Congressional District(s) | Illinois 14th |
| State House Districts | 70 |
| State Senate Districts | 35 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.87% |
| African American | 0% |
| Hispanic | 0.1% |
| Asian | 0.37% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.65% |