Identifiers: city · village · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Johnstown (city), NY | 8,204 |
| 2 | Ilion (village), NY | 7,646 |
| 3 | Herkimer (village), NY | 7,234 |
| 4 | Little Falls (city), NY | 4,605 |
| 5 | Mohawk (village), NY | 2,415 |
| 6 | Dolgeville (village), NY | 2,042 |
| 7 | Fort Plain (village), NY | 1,930 |
| 8 | St. Johnsville (village), NY | 1,643 |
| 9 | East Herkimer (CDP), NY | 787 |
| 10 | Caroga Lake (CDP), NY | 548 |
| 11 | Newport (village), NY | 543 |
| 12 | Poland (village), NY | 464 |
| 13 | Middleville (village), NY | 407 |
| 14 | Salisbury Center (CDP), NY | 323 |