| Place Name | Cornish Flat |
| Place Type | Unincorporated |
| ZIP Code(s) | 03745 |
| County | Sullivan County |
| Area Code(s) | 603 |
| Timezone | Eastern Daylight Time (EDT) |
| Population () | |
| Metro/Micro Stats Area | Lebanon, NH-VT |
| US Congressional District(s) | New Hampshire 2nd |
| State House Districts | Sullivan 2 |
| State Senate Districts | 5 |