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Archive Ireland
2012
Airtricity Premier Division
| No. | Club | Average | Highest | |
| 1 | Shamrock Rovers FC | 3.022 | -21,8% | 5.000 |
| 2 | Sligo Rovers FC | 3.007 | 41,6% | 6.097 |
| 3 | Cork City FC | 2.764 | 29,9% | 4.324 |
| 4 | Derry City FC | 1.704 | -21,9% | 3.500 |
| 5 | Bohemians FC Dublin | 1.559 | 1,8% | 2.825 |
| 6 | St. Patrick's Athletic FC | 1.533 | 9,3% | 3.250 |
| 7 | Shelbourne FC | 1.170 | 23,3% | 1.918 |
| 8 | Drogheda United FC | 1.030 | 22,3% | 1.553 |
| 9 | Bray Wanderers | 998 | -20,1% | 1.750 |
| 10 | Dundalk FC | 993 | -27,2% | 2.466 |
| 11 | UCD Dublin AFC | 556 | -18,8% | 1.562 |
| 12 | Monaghan United FC | 826 | 157,3% | 1.500 |
| . | Total | 1.645 | 2,0% | 6.097 |
Airtricity First Division
| No. | Club | Average | Highest | |
| 1 | Limerick 37 FC | 736 | 23,7% | 1.486 |
| 2 | Waterford United FC | 454 | -5,2% | 613 |
| 3 | Finn Harps FC | 422 | -3,0% | 748 |
| 4 | Longford Town FC | 379 | 6,2% | 750 |
| 5 | Wexford Youths FC | 285 | 24,5% | 571 |
| 6 | Athlone Town FC | 257 | 37,4% | 420 |
| 7 | SD Galway FC | 245 | 92,9% | 650 |
| 8 | Mervue United AFC | 242 | -29,4% | 346 |
| . | Total | 377 | -39,4% | 1.486 |