Dún Laoghaire–Rathdown County Council: 1985 Local Election
| Party | Seats | Votes | Share | Candidates | Constituencies | |||||
| Fianna Fáil |  | 13 | (+13) | 22006 | 38.1% | (+38.1%) | 23 | (+23) | 7 | (+7) |
| Fine Gael |  | 11 | (+11) | 19711 | 34.1% | (+34.1%) | 22 | (+22) | 7 | (+7) |
| Labour Party |  | 3 | (+3) | 6989 | 12.1% | (+12.1%) | 14 | (+14) | 7 | (+7) |
| Workers' Party |  | 1 | (+1) | 2669 | 4.6% | (+4.6%) | 6 | (+6) | 6 | (+6) |
| Green Alliance |  | 0 | 2304 | 4.0% | (+4.0%) | 7 | (+7) | 7 | (+7) | |
| Independent |  | 0 | 2041 | 3.5% | (+3.5%) | 8 | (+8) | 4 | (+4) | |
| Sinn Féin |  | 0 | 1830 | 3.2% | (+3.2%) | 3 | (+3) | 3 | (+3) | |
| Donegal Progressive Party |  | 0 | 241 | 0.4% | (+0.4%) | 0 | 0 | |||