Sligo Corporation: 1991 Local Election
| Party | Seats | Votes | Share | Candidates | Constituencies | |||||
| Fine Gael |  | 3 | (-1) | 2148 | 25.7% | (-1.3%) | 6 | (-1) | 3 | |
| Fianna Fáil |  | 3 | (-1) | 2041 | 24.5% | (-13.5%) | 8 | (-2) | 3 | |
| Independent |  | 2 | (+1) | 1490 | 17.9% | (+8.4%) | 9 | (+4) | 3 | (+1) |
| Labour Party |  | 2 | 1439 | 17.2% | (+7.4%) | 7 | (+4) | 3 | ||
| Sinn Féin |  | 2 | (+2) | 1143 | 13.7% | (+8.9%) | 2 | 2 | ||
| Progressive Democrats |  | 0 | 85 | 1.0% | (+1.0%) | 1 | (+1) | 1 | (+1) | |