Before (end of 2016) (30 seats, Elections Centre)
Other 15 · Plaid Cymru - The Party of Wales 12 · Labour 2 · Liberal Democrats 1 · Conservative 0
After (end of 2017) (30 seats, Elections Centre)
Plaid Cymru - The Party of Wales 14 · Other 13 · Labour 2 · Liberal Democrats 1 · Conservative 0
Ward results
Aethwy3 seats
| Meirion Jones | PC | 1,343 ✓ |
| Robin Wyn Williams | Plaid Cymru - The Party of Wales | 1,314 ✓ |
| Alun Wyn Mummery | PC | 1,267 ✓ |
| Selwyn Trefor Williams | Independent | 882 |
| Justin McCoy | Labour | 553 |
| Jan Hale | Labour | 505 |
Bro Aberffraw2 seats
| Paul Rogers | Independent | 793 ✓ |
| Bryan Owen | Independent | 545 ✓ |
| Dilwyn Griffiths | PC | 539 |
| Pete Sims | Labour | 340 |
| Tegwyn Roberts | PC | 275 |
Bro Rhosyr2 seats
| Dafydd Roberts | Independent | 880 ✓ |
| Ed Jones | Independent | 858 ✓ |
| Mathew Thomas | PC | 736 |
| Dafydd Owen | Independent | 613 |
| Einion Parry Williams | Labour | 333 |
Caergybi3 seats
| Robert Jones | Independent | 1,049 ✓ |
| Shaun Redmond | Independent | 673 ✓ |
| Glyn Haynes | Labour | 625 ✓ |
| Keith Thomas | PC | 559 |
| Andrew David Williams | Labour | 540 |
| Beryl Warner | Labour | 515 |
| Ken Taylor | PC | 391 |
| Ken Tatlock | Independent | 369 |
| Philip Michael Eastment | Conservative | 261 |
Canolbarth Mon3 seats
| Nicola Fay Roberts | — | 1,637 ✓ |
| Dylan Rees | — | 1,528 ✓ |
| Bob Parry | — | 1,527 ✓ |
| Stephanie Roberts | Independent | 1,161 |
| Margaret Ann Thomas | Labour | 814 |
Canolbarth Môn3 seats
| Nicola Roberts | PC | 1,637 ✓ |
| Dylan Rees | PC | 1,528 ✓ |
| Bob Parry | PC | 1,527 ✓ |
| Stephanie Roberts | Independent | 1,161 |
| Margaret Casilda Thomas | Labour | 814 |
Llifon2 seats
| Gareth Glyn Jones | Independent | 1,030 ✓ |
| Richard Anthony Dew | Independent | 749 ✓ |
| Glyn Jones | Independent | 477 |
| Celfyn Wyn Furlong | Conservative | 364 |
| Peter John Davies | — | 320 |
Lligwy3 seats
| Ieuan Williams | Independent | 1,479 ✓ |
| Vicky Hughes | PC | 843 ✓ |
| Margaret Roberts | — | 664 ✓ |
| Elliot Owen Riley-Walsh | PC | 557 |
| Angela Elizabeth Gliddon | Labour | 470 |
Seiriol3 seats
| Lewis Wyn Davies | — | 1,375 ✓ |
| Carwyn Elias Jones | — | 1,355 ✓ |
| Alun Roberts | PC | 972 ✓ |
| Hefin Wyn Thomas | Independent | 682 |
| John Griffiths | Labour | 676 |
| Neil Fairlamb | Conservative | 562 |
| Clay Theakston | Conservative | 501 |
| Judith Christina Moss | Liberal Democrats | 332 |
Talybolion3 seats
| Kenneth Hughes | Independent | 1,259 ✓ |
| Llinos Huws | PC | 1,139 ✓ |
| Llinos Medi | — | 1,139 ✓ |
| John Wyn Griffith | — | 977 ✓ |
| Joe Nicholas Lock | Labour | 419 |
Twrcelyn3 seats
| Aled Jones | Liberal Democrats | 1,319 ✓ |
| Richard Jones | Independent | 1,307 ✓ |
| Richard Griffiths | Independent | 1,202 ✓ |
| Wyn Hughes | Independent | 855 |
| Carys Cranston | PC | 823 |
| Gordon McLeod Warren | Labour | 489 |
Ynys Gybi3 seats
| Dafydd Rhys Thomas | Independent | 890 ✓ |
| Trefor Hughes | — | 753 ✓ |
| Joe Robertson | Labour | 641 ✓ |
| Jeff Evans | Independent | 585 |
| William John Chorlton | Labour | 550 |
| Paula Margaret Parry | Conservative | 458 |
| Anwen Denise McCann | Independent | 370 |