| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Jeffrystown | city | An Iarmhi | Ireland | 53.59 | -7.21 | 830 | 1234 |
| Johnstown | city | An Iarmhi | Ireland | 53.60 | -7.17 | 830 | 1484 |
| Johnstown | city | An Iarmhi | Ireland | 53.65 | -7.18 | 830 | 1394 |
| Joristown Lower | city | An Iarmhi | Ireland | 53.54 | -7.12 | 396 | 2037 |
| Joristown Upper | city | An Iarmhi | Ireland | 53.53 | -7.11 | 387 | 2016 |
| Judgeville | city | An Iarmhi | Ireland | 53.35 | -7.38 | 393 | 1009 |