| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Old Connaught | city | Baile Atha Cliath | Ireland | 53.2083333 | -6.1344444 | 95 | 29109 |
| Oldbawn | city | Baile Atha Cliath | Ireland | 53.2755556 | -6.3675 | 387 | 100549 |
| Oldtown | city | Baile Atha Cliath | Ireland | 53.5252778 | -6.3155556 | 167 | 93318 |
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