| Place Name | Mendham Township |
| Place Type | Township |
| County | Morris County |
| Area Code(s) | 862,973,908 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 5,998 |
| Majority Ethnicity | White 90.91% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 11th |
| State Assembly Districts | 25 |
| State Senate Districts | 25 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.91% |
| African American | 0.75% |
| Hispanic | 0% |
| Asian | 4.62% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.71% |