Before (end of 2016) (43 seats, Elections Centre)
Conservative 19 · Labour 11 · Other 10 · Liberal Democrats 3
After (end of 2017) (43 seats, Elections Centre)
Conservative 25 · Labour 10 · Other 5 · Liberal Democrats 3
Ward results
Caerwent1 seat
| Phil Murphy | Conservative | 412 ✓ |
| Lisset Maria Burrett | Labour | 120 |
| Les Keen | Liberal Democrats | 87 |
| Gordon Norrie | UK Independence Party (UKIP) | 56 |
Caldicot Castle1 seat
| Joan Watkins | Liberal Democrats | 271 ✓ |
| Jeff Williams | Labour | 253 |
| Tim Fawcitt | Conservative | 247 |
Cantref1 seat
| Paul Jordan | Conservative | 432 ✓ |
| David Richard Simcock | Labour | 352 |
| Christopher James Copner | Independent | 94 |
| Jane Mary Julia Robbins | Liberal Democrats | 43 |
Castle1 seat
| Maureen Powell | Conservative | 489 ✓ |
| Stephen Nathaniel Head | Labour | 291 |
| Didier Jack Louis Duchet | Liberal Democrats | 55 |
Croesonen1 seat
| Roger George Harris | Labour | 381 ✓ |
| Stephen Graham Anthony | Conservative | 143 |
| Jason Leslie Ralph Chapman | Independent | 68 |
Crucorney1 seat
| Della Hughes | Independent | 464 ✓ |
| Alan James | Conservative | 394 |
| Margaret Harris | Labour | 120 |
Devauden1 seat
| Bob Greenland | Conservative | 399 ✓ |
| Joe Davis | Labour | 175 |
Dewstow1 seat
| Tony Easson | Labour | 283 ✓ |
| David James Ashwin | — | 123 |
| Anthony Howard Griffiths | Conservative | 90 |
Dixton with Osbaston1 seat
| Richard Gwyn Roden | Conservative | 499 ✓ |
| Anthea Madeline Dewhurst | Liberal Democrats | 253 |
| Jane Lesley Lucas | Independent | 205 |
| Vivien Mitchell | Labour | 87 |
Drybridge1 seat
| Mat Feakins | Conservative | 654 ✓ |
| Patrick John Harkness | Labour | 237 |
| Alan Michael Wintle | Independent | 151 |
| Sarah Louise Gillie | Liberal Democrats | 92 |
| Sian Damon | PC | 53 |
Goetre Fawr1 seat
| Bryan Jones | Conservative | 620 ✓ |
| Joseph William England | Labour | 216 |
Green Lane1 seat
| Alan Davies | Labour | 175 ✓ |
| Cris Watkins | Liberal Democrats | 160 |
| John Marshall | Independent | 115 |
| Alan Sykes Whiteley | Conservative | 108 |
Grofield1 seat
| Sheila Woodhouse | Conservative | 277 ✓ |
| Peter John Marsh-Jenks | Labour | 164 |
| Nick Tatam | Liberal Democrats | 157 |
| Andrew Lee Dobson | Green | 28 |
Lansdown1 seat
| Martyn Groucutt | Labour | 337 ✓ |
| Victoria Helen Camp | Conservative | 162 |
Larkfield1 seat
| Paul Pavia | Conservative | 340 ✓ |
| Phil Hobson | Liberal Democrats | 270 |
| David William Adams | Labour | 156 |
Llanbadoc1 seat
| Val Smith | Independent | 305 ✓ |
| Janet Elizabeth Butler | Conservative | 217 |
| Jane Foulds Smith | Labour | 32 |
Llanelly Hill2 seats
| Simon Howarth | Independent | 945 ✓ |
| Jane Pratt | Conservative | 883 ✓ |
| Tony Carrington | Labour | 458 |
| Penny Simcock | Labour | 291 |
| Pam Bell | PC | 225 |
Llanfoist Fawr1 seat
| Geoff Howard | Conservative | 525 ✓ |
| Alan Clouth | Labour | 187 |
| Kerry Wreford-Bush | Liberal Democrats | 45 |
| Leonie Jones | Independent | 41 |
Llangybi Fawr1 seat
| Peter Clarke | Conservative | 536 ✓ |
| Karen Windall | Labour | 97 |
| Caroline Duchet | Liberal Democrats | 62 |
| Barry Embling | Green | 45 |
Llanover1 seat
| Sarah Jayne Jones | Conservative | 645 ✓ |
| Margaret Willcock | Labour | 205 |
Llantilio Crossenny1 seat
| Ruth Edwards | Conservative | 334 ✓ |
| David Evans | Independent | 275 |
| Ann Eggleton | Labour | 81 |
| Ian Chandler | Green | 69 |
Llanwenarth Ultra1 seat
| Kevin George Williams | Labour | 303 ✓ |
| Michael Butler | Conservative | 249 |
Mardy1 seat
| Malcolm Lane | Conservative | 354 ✓ |
| Ralph Chapman | Independent | 194 |
| Catrin Maby | Labour | 127 |
Mill1 seat
| Frances Taylor | Independent | 651 ✓ |
| Paul Majewski | Conservative | 388 |
| Alun Lloyd | Labour | 112 |
Mitchel Troy1 seat
| Richard Alun John | Conservative | 283 ✓ |
| Duncan McArthur | Independent | 140 |
| Brian Willott | Liberal Democrats | 84 |
| Adam Greenwood | Labour | 36 |
Overmonnow1 seat
| Jamie Treharne | Conservative | 264 ✓ |
| Terry Christopher | Independent | 176 |
| Su McConnel | Labour | 173 |
| David Greaves | UK Independence Party (UKIP) | 30 |
| Gary Witcombe | Independent | 29 |
Portskewett1 seat
| Peter Fox | Conservative | 491 ✓ |
| Rachel Garrick | Labour | 369 |
Priory1 seat
| Tudor Thomas | Labour | 348 ✓ |
| John Prosser | Conservative | 345 |
| Jenni Brews | Liberal Democrats | 40 |
Raglan1 seat
| Penny Jones | Conservative | 403 ✓ |
| Alison Willott | Liberal Democrats | 358 |
| Pennie Walker | Independent | 154 |
| Stuart Willcock | Labour | 65 |
Rogiet1 seat
| Linda Guppy | Liberal Democrats | 182 ✓ |
| Paul Cromwell | Independent | 150 |
| Sheryl Evans | Labour | 129 |
| Ella Davies | Conservative | 59 |
Severn1 seat
| Jim Higginson | Labour | 209 ✓ |
| James Harris | Independent | 152 |
| Ian Standing | Conservative | 113 |
Shirenewton1 seat
| Louise Brown | Conservative | 509 ✓ |
| Philip Moles | Independent | 279 |
| Hilary Beach | Labour | 110 |
| Vicky Hepburn-John | Liberal Democrats | 56 |
St Christopher's1 seat
| Dimitri Batrouni | Labour | 320 ✓ |
| Joshua Chohan | Conservative | 254 |
| Tony Redhead | Liberal Democrats | 40 |
St Kingsmark1 seat
| David Dovey | Conservative | 456 ✓ |
| Gerry Rowe | Labour | 94 |
| Lia Hind | Independent | 94 |
| Henry Hodges | Liberal Democrats | 62 |
St Mary's1 seat
| Jez Becker | Liberal Democrats | 244 ✓ |
| Marc le Peltier | Conservative | 214 |
| Dale Rooke | Labour | 176 |
St. Arvans1 seat
| Ann Webb | Conservative | 370 ✓ |
| Vanessa Dodd | Labour | 130 |
| Steve Pocock | Independent | 87 |
| Don Grant | Liberal Democrats | 52 |
The Elms1 seat
| Lisa Dymock | Conservative | 626 ✓ |
| Steve Griffiths | Labour | 302 |
Thornwell1 seat
| Armand Watts | Labour | 405 ✓ |
| Michael Lewis | Conservative | 227 |
Trellech United1 seat
| Debby Blakeborough | Independent | 636 ✓ |
| Christopher Edwards | Conservative | 577 |
| Philip Bowyer | Labour | 61 |
Usk1 seat
| Brian Strong | Conservative | 596 ✓ |
| Isobel Brown | Independent | 260 |
| Virginia Hoselitz | Labour | 110 |
West End1 seat
| Dave Evans | Labour | 226 ✓ |
| Phillip Sutton | Independent | 139 |
| Paul Watkins | Conservative | 89 |
Wyesham1 seat
| Laura Jones | Conservative | 347 ✓ |
| Catherine Fookes | Labour | 323 |
| Stuart Wilson | Independent | 155 |
