| Localité | Code postal |
|---|---|
| Appleton, Niagara | 14008 |
| Barker, Niagara | 14012 |
| Burt, Niagara | 14028 |
| Gasport, Niagara | 14067 |
| Lewiston, Niagara | 14092 |
| Lockport, Niagara | 14094 |
| Middleport, Niagara | 14105 |
| Model City, Niagara | 14107 |
| Newfane, Niagara | 14108 |
| Niagara Falls, Niagara | 14301, 14303, 14304, 14305 |
| Niagara University, Niagara | 14109 |
| North Tonawanda, Niagara | 14120 |
| Olcott, Niagara | 14126 |
| Pendleton, Niagara | 14120, 14132, 14094 |
| Ransomville, Niagara | 14131 |
| Royalton, Niagara | 14105 |
| Sanborn, Niagara | 14132 |
| Shelby, Niagara | 14105 |
| Stella Niagara, Niagara | 14092 |
| Wheatfield, Niagara | 14304, 14120 |
| Wilson, Niagara | 14172 |
| Youngstown, Niagara | 14174 |