Jefferson County communities
- Adams (town)
- Adams (village)
- Alexandria (town)
- Alexandria Bay (village)
- Antwerp (town)
- Antwerp (village)
- Black River (village)
- Brownville (town)
- Brownville (village)
- Cape Vincent (town)
- Cape Vincent (village)
- Carthage (village)
- Champion (town)
- Chaumont (village)
- Clayton (town)
- Clayton (village)
- Deferiet (village)
- Dexter (village)
- Ellisburg (town)
- Ellisburg (village)
- Evans Mills (village)
- Glen Park (village)
- Henderson (town)
- Hounsfield (town)
- LeRay (town)
- Lorraine (town)
- Lyme (town)
- Mannsville (village)
- Orleans (town)
- Pamelia (town)
- Philadelphia (town)
- Philadelphia (village)
- Rodman (town)
- Rutland (town)
- Sackets Harbor (village)
- Theresa (town)
- Theresa (village)
- Watertown (city)
- Watertown (town)
- West Carthage (village)
- Wilna (town)
- Worth (town)