Waterford County Council: 1991 Local Election
| Party | Seats | Votes | Share | Candidates | Constituencies | |||||
| Fianna Fáil |  | 10 | (-1) | 10163 | 43.3% | (-5.4%) | 19 | (+1) | 4 | |
| Fine Gael |  | 9 | (-1) | 7587 | 32.3% | (-5.7%) | 13 | (-2) | 4 | |
| Labour Party |  | 3 | (+1) | 3291 | 14.0% | (+6.3%) | 5 | 3 | ||
| Workers' Party |  | 1 | (+1) | 636 | 2.7% | (+1.6%) | 2 | 2 | ||
| Independent |  | 0 | 1067 | 4.5% | (+2.0%) | 5 | (+2) | 3 | (+1) | |
| Progressive Democrats |  | 0 | 732 | 3.1% | (+3.1%) | 2 | (+2) | 2 | (+2) | |