20 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 14094 | Lockport | 50,153 |
| 14120 | North Tonawanda | 44,241 |
| 14304 | Niagara Falls | 29,208 |
| 14305 | Niagara Falls | 16,696 |
| 14301 | Niagara Falls | 10,923 |
| 14092 | Lewiston | 10,247 |
| 14132 | Sanborn | 6,453 |
| 14303 | Niagara Falls | 6,156 |
| 14108 | Newfane | 5,713 |
| 14174 | Youngstown | 5,669 |
| 14105 | Middleport | 5,313 |
| 14131 | Ransomville | 5,252 |
| 14067 | Gasport | 3,976 |
| 14172 | Wilson | 3,091 |
| 14012 | Barker | 2,911 |
| 14109 | Niagara University | 1,473 |
| 14008 | Appleton | 1,423 |
| 14028 | Burt | 1,257 |
| 14302 | Niagara Falls | 189 |
| 14126 | Olcott | 109 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 20 ZCTAs in Niagara County, New York (US Census).