| Place Name | Jefferson Township |
| Place Type | Township |
| County | Morris County |
| Area Code(s) | 862,973 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 20,638 |
| Majority Ethnicity | White 86.14% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 11th |
| State Assembly Districts | 26 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 86.14% |
| African American | 3.08% |
| Hispanic | 0.17% |
| Asian | 4.47% |
| Native American | 0.06% |
| Hawaiin/Pacific Islander | 6.07% |