| Place | Post Code |
|---|---|
| Moynasboy, Trim | C15 |
| An Tagard Nua (Newhaggard, Trim) | C15 |
| An Baile Nua (Newtown, Trim) | C15 |
| Newtown Clonbun, Trim | C15 |
| Oakstown, Trim | C15 |
| Peterstown, Trim | C15 |
| Phillinstown, Trim | C15 |
| Phillistown, Trim | C15 |
| Rochford Manor, Trim | C15 |
| Roristown, Trim | C15 |
| Scurlockstown Business Park, Trim | C15 |
| Shanlothe, Trim | C15 |
| Steeplestown, Trim | C15 |
| Steeplestown Park, Trim | C15 |
| Halla na Gcloch (Stonehall, Trim) | C15 |
| The Maudlins, Trim | C15 |
| Baile Átha Troim (Trim, Trim) | C15 |
| Baile Throimléid (Trimblestown, Trim) | C15 |
| An Halla Bán (Whitehall, Trim) | C15 |