Monaghan County Council: 1979 Local Election
| Party | Seats | Votes | Share | Candidates | Constituencies | |||||
| Fianna Fáil | 9 | (+2) | 10730 | 41.3% | (+5.3%) | 12 | (-4) | 4 | ||
| Fine Gael | 8 | 9979 | 38.4% | (-0.0%) | 13 | 4 | ||||
| Protestant Association | 2 | 1912 | 7.4% | (-2.0%) | 2 | (-1) | 2 | (-1) | ||
| Independent | 1 | (-1) | 1573 | 6.1% | (-1.8%) | 2 | (-1) | 2 | ||
| Sinn Féin | 0 | (-1) | 1369 | 5.3% | (-0.5%) | 3 | (-1) | 2 | ||
| Sinn Féin (Workers' Party) | 0 | 394 | 1.5% | (+1.5%) | 3 | (+3) | 2 | (+2) | ||