| Place Name | Jefferson Valley |
| Place Type | Unincorporated |
| ZIP Code(s) | 10535 |
| County | Westchester County |
| Area Code(s) | 914 |
| Timezone | Eastern Daylight Time (EDT) |
| Population () | |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New York 17th |
| State Assembly Districts | 94 |
| State Senate Districts | 40 |