List of all settlements:
- Bloomingburg, Sullivan
- Bloomingdale, Sullivan
- Blountville, Sullivan
- Bluff City, Sullivan
- Bristol, Sullivan
- Callicoon, Sullivan
- Carlisle, Sullivan
- Charlestown, Sullivan
- Claremont, Sullivan
- Colonial Heights, Sullivan
- Dugger, Sullivan
- Dushore, Sullivan
- Eagles Mere, Sullivan
- Farmersburg, Sullivan
- Forksville, Sullivan
- Green City, Sullivan
- Greencastle, Sullivan
- Hortonville, Sullivan
- Humphreys, Sullivan
- Hymera, Sullivan
- Jeffersonville, Sullivan
- Johnson City, Sullivan
- Kingsport, Sullivan
- Laporte, Sullivan
- Livingston Manor, Sullivan
- Merom, Sullivan
- Milan, Sullivan
- Monticello, Sullivan
- Narrowsburg, Sullivan
- Newport, Sullivan
- Newtown, Sullivan
- Plainfield, Sullivan
- Rock Hill, Sullivan