Founded in 1808, Niagara County is one of 62 counties in the state of New York. Historically, Niagara County was formed from Genesee County. The city of Lockport is the county seat. With FIPS code of 63, Niagara County has a population of 211,653 and area of 1,140 square miles (2,953 km2).
List of all cities in Niagara County, NY alphabetically
| City/Town | Postal Code | Area Code |
| Appleton, NY | 14008 | 716 |
| Barker, NY | 14012 | 716 |
| Burt, NY | 14028 | 716 |
| Gasport, NY | 14067 | 716 |
| Lewiston, NY | 14092 | 716 |
| Lockport, NY | 14094 | 716 |
| 14095 | 716 | |
| Middleport, NY | 14105 | 716 |
| Model City, NY | 14107 | 716 |
| Newfane, NY | 14108 | 716 |
| Niagara Falls, NY | 14301 | 716 |
| 14302 | 716 | |
| 14303 | 716 | |
| 14304 | 716 | |
| 14305 | 716 | |
| Niagara University, NY | 14109 | 716 |
| North Falls, NY | 14301 | 716 |
| 14302 | 716 | |
| 14303 | 716 | |
| 14304 | 716 | |
| 14305 | 716 | |
| North Tonawanda, NY | 14120 | 716 |
| Olcott, NY | 14126 | 716 |
| Pendleton, NY | 14094 | 716 |
| 14120 | 716 | |
| 14132 | 716 | |
| Ransomville, NY | 14131 | 716 |
| Royalton, NY | 14105 | 716 |
| Sanborn, NY | 14132 | 716 |
| Shelby, NY | 14105 | 716 |
| Stela Niagara, NY | 14092 | 716 |
| 14144 | 716 | |
| 14092 | 716 | |
| 14144 | 716 | |
| Wheatfield, NY | 14120 | 716 |
| 14304 | 716 | |
| Wilson, NY | 14172 | 716 |
| Youngstown, NY | 14174 | 716 |