Before (end of 1976) (66 seats, Elections Centre)
Other 56 · Plaid Cymru - The Party of Wales 6 · Labour 4 · The Liberal Party 0 · Conservative 0
After (end of 1977) (66 seats, Elections Centre)
Other 45 · Plaid Cymru - The Party of Wales 9 · Conservative 8 · Labour 4 · The Liberal Party 0
Ward results
Aethwy No.11 seat · turnout 62.7%
| D. Williams | Independent | 1,158 |
| J. Pritchard | Independent | 1,119 |
Aethwy No.21 seat · turnout 58.6%
| J. Williams | Plaid Cymru - The Party of Wales | 1,304 |
| A. Connor | Conservative | 639 |
Aethwy No.31 seat · turnout 55.6%
| E. Roberts | Plaid Cymru - The Party of Wales | 1,243 |
| J. Billing | Conservative | 582 |
Aled1 seat · turnout 56.2%
| V. Williams | Conservative | 554 |
| Ed Jones | Independent | 524 |
| E. Jenkins | Independent | 314 |
Bala & Penllyn1 seat
| T. Jones | Independent | 0 ✓ |
Bangor No.12 seats · turnout 41.9%
| G. Jones | Independent | 1,237 |
| A. Robertson | Independent | 998 |
| G. Jones | Labour | 884 |
| J. Nicholson | Labour | 737 |
| I. Albin | LIB | 519 |
Bangor No.21 seat
| R. Roberts | Labour | 0 ✓ |
Bangor No.31 seat · turnout 25.8%
| C. Hainge | Labour | 417 |
| D. Jones | Independent | 291 |
Barmouth1 seat
| L. Edwards | Independent | 0 ✓ |
Beaumaris1 seat
| M. Roberts | Labour | 0 ✓ |
Bethesda1 seat · turnout 69.7%
| D. Orwig | Plaid Cymru - The Party of Wales | 1,397 |
| T. Williams | Labour | 753 |
Caernarfon1 seat
| I. Griffith | Independent | 0 ✓ |
Caernarfon No.11 seat · turnout 49.9%
| I. Jones | Independent | 474 |
| J. Williams | Independent | 303 |
Caernarfon No.21 seat · turnout 55.3%
| J. Hughes | Plaid Cymru - The Party of Wales | 885 ✓ |
| M. Bonner-Pritchard | Independent | 620 |
| T. Jones | Independent | 360 |
| Wilkinson W. | Independent | 26 |
Conwy1 seat
| B. Pattinson | Independent | 0 ✓ |
Conwy Marl1 seat · turnout 48.8%
| R. Trevor | Conservative | 825 |
| S. Roberts | Independent | 528 |
Criccieth1 seat · turnout 64.5%
| W. George | Independent | 552 |
| A. Maclean | Conservative | 309 |
Deudraeth No.11 seat
| E. Williams | Plaid Cymru - The Party of Wales | 0 ✓ |
Deudraeth No.21 seat
| Euros Davies | Independent | 0 ✓ |
Dolgellau Rural No.11 seat · turnout 61.1%
| I. Price | Independent | 841 |
| E. Williams | Plaid Cymru - The Party of Wales | 732 |
Dolgellau Rural No.21 seat · turnout 56.9%
| Euros Davies | Independent | 853 |
| P. Jenkins | Plaid Cymru - The Party of Wales | 386 |
| B. Jones | Independent | 146 |
Ffestiniog No.11 seat · turnout 70.7%
| G. Evans | Labour | 965 |
| W. Roberts | Plaid Cymru - The Party of Wales | 489 |
Ffestiniog No.21 seat
| R. Roberts | Independent | 0 ✓ |
Gwyrfai No.11 seat · turnout 78.2%
| B. Williams | Labour | 1,251 |
| D. Roberts | Plaid Cymru - The Party of Wales | 1,121 |
Gwyrfai No.21 seat
| A. Hughes-Jones | Independent | 0 ✓ |
Gwyrfai No.31 seat · turnout 69.6%
| R Jones | Independent | 808 |
| R. Price | Plaid Cymru - The Party of Wales | 602 |
| A. Clowes | Conservative | 255 |
Gwyrfai No.41 seat · turnout 71.7%
| H. Owen | Independent | 1,148 |
| E. Wyn | Plaid Cymru - The Party of Wales | 1,020 |
Gwyrfai No.51 seat · turnout 66.2%
| P. Larson | Plaid Cymru - The Party of Wales | 931 |
| A. Evans | Labour | 813 |
| G. Jones | Independent | 298 |
Gwyrfai No.71 seat · turnout 56.8%
| R. Humphreys | Independent | 642 |
| R. Pritchard | Plaid Cymru - The Party of Wales | 618 |
Holyhead No.11 seat · turnout 43.7%
| A. Robertson | Independent | 976 |
| R. Owen | Plaid Cymru - The Party of Wales | 262 |
Holyhead No.21 seat
| D. Manley-Williams | Independent | 0 ✓ |
Holyhead No.31 seat · turnout 44.3%
| G. Thomas | Independent | 506 ✓ |
| T. Covett | Independent | 411 |
| R. Parry | Independent | 181 |
| M. Jones | Plaid Cymru - The Party of Wales | 164 |
Llandudno East1 seat · turnout 44.0%
| J. Evans | Conservative | 448 |
| T. Williams | Independent | 204 |
Llandudno North1 seat · turnout 48.4%
| D. Dennis | Conservative | 416 |
| F. Tinkham | Conservative | 259 |
| M. Humphreys | Independent | 253 |
Llandudno Penrhyn1 seat · turnout 53.5%
| T. White | Independent | 928 |
| A. Davey | LIB | 822 |
Llandudno South1 seat · turnout 40.7%
| A. Barma | Conservative | 1,357 |
| F. Williams | Independent | 548 |
Llandudno West1 seat · turnout 40.4%
| E. Hughes | Independent | 874 |
| H. Gott | Conservative | 494 |
Llanfarifechan1 seat · turnout 57.0%
| F. Jones | Independent | 768 |
| T. Hughes | Independent | 757 |
Llangefni1 seat
| T. Roberts | Independent | 0 ✓ |
Llanrwst1 seat
| L. Phillips | Independent | 0 ✓ |
Lleyn No.11 seat
| R. Williams | Independent | 0 ✓ |
Lleyn No.21 seat
| T. Humphreys | Independent | 0 ✓ |
Lleyn No.31 seat · turnout 59.8%
| R. Williams | Independent | 1,440 |
| D. Wales | Conservative | 394 |
Lleyn No.41 seat
| J. Roberts | Independent | 0 ✓ |
Menaibridge1 seat · turnout 54.4%
| C. Parry | Independent | 720 |
| M. Roffey | Conservative | 257 |
| Jones H. | Independent | 175 |
Nantconwy No.11 seat
| O. Roberts | Independent | 0 ✓ |
Nantconwy No.21 seat
| T. Jones | Independent | 0 ✓ |
Ogwen2 seats · turnout 37.9%
| D. Jones | Plaid Cymru - The Party of Wales | 1,069 |
| D. Jones | Independent | 883 |
| J. Jones | Independent | 647 |
| H. Rochell | Labour | 557 |
Penmaenmawr1 seat · turnout 52.5%
| A. Dyson | Conservative | 862 |
| R. Williams | Independent | 751 |
Pensarn1 seat
| D. Williams | Independent | 0 ✓ |
Porthmadog1 seat
| H. Lewis | Plaid Cymru - The Party of Wales | 0 ✓ |
Pwllheli1 seat
| J. Roberts | Independent | 0 ✓ |
Twrcelyn No.11 seat
| T. Jones | Independent | 883 |
| R. Clegg | Conservative | 329 |
Twrcelyn No.21 seat · turnout 58.6%
| B. Owens | Conservative | 648 |
| J. Hughes | Plaid Cymru - The Party of Wales | 640 |
| O. Griffiths | Independent | 568 |
Twrcelyn No.31 seat
| O. Albert | Independent | 0 ✓ |
Tywyn1 seat · turnout 64.2%
| M Vaughan | Independent | 1,137 |
| J. Lloyd | Independent | 851 |
| J. Blowers | Labour | 216 |
Valley No.11 seat · turnout 49.6%
| G. Williams | Independent | 575 |
| E. Hodgetts | Conservative | 338 |
| G. Jones | Plaid Cymru - The Party of Wales | 252 |
Valley No.21 seat · turnout 50.7%
| R. Pierce | Independent | 1,388 |
| J. Williams | Plaid Cymru - The Party of Wales | 252 |
Valley No.31 seat
| R. Davies | Plaid Cymru - The Party of Wales | 0 ✓ |
Valley No.41 seat · turnout 53.5%
| J. Owens | Independent | 493 ✓ |
| W. Williams | Plaid Cymru - The Party of Wales | 472 |
| T. Wallace | Conservative | 314 |
| A Williams | Independent | 253 |
