Before (end of 2011) (48 seats, Elections Centre)
Conservative 37 · Labour 9 · Liberal Democrats 2 · Other 0
After (end of 2012) (48 seats, Elections Centre)
Conservative 34 · Labour 11 · Liberal Democrats 2 · Other 1
Ward results
| Stephen Boulton | Conservative | 1,194 ✓ |
| Donald Mahon | Labour | 151 |
| William Braithwaite | UK Independence Party (UKIP) | 149 |
| Jennifer Blumsom | Liberal Democrats | 101 |
| John-Paul Rea | Green | 77 |
Haldens1 seat · turnout 29.5%
| Benjamin Yetts | Labour | 725 ✓ |
| Howard Hughes | Conservative | 508 |
| Berenice Constance Mary Dowlen | Green | 138 |
| Konrad Basch | Liberal Democrats | 81 |
Handside1 seat · turnout 43.3%
| Helen Elizabeth Bromley | Conservative | 1,130 ✓ |
| Bobby Bridgeman | Liberal Democrats | 673 |
| Sarah Carthew | Labour | 354 |
| Ian Nicholas Challoner Nendick | Green | 176 |
Hatfield Central1 seat · turnout 24.6%
| Maureen Janet Cook | Labour | 653 ✓ |
| Frank Robert Bowron | Conservative | 390 |
| Tom Bailey | Liberal Democrats | 99 |
| Cecile May Raw | Green | 94 |
Hatfield East1 seat · turnout 28.9%
| Mark Long | Conservative | 692 ✓ |
| Astrid Carle Thorpe | Labour | 453 |
| Lis Meyland-Smith | Liberal Democrats | 138 |
| Cathy Jeffery | Green | 129 |
| Craig Huteson-Stewart | TUSC | 53 |
Hatfield South1 seat · turnout 22.3%
| Kieran Thorpe | Labour | 545 ✓ |
| Stanley Laver-Walton | Conservative | 234 |
| Simon John Archer | Liberal Democrats | 74 |
| Noel Taylor | Green | 51 |
Hatfield Villages1 seat · turnout 21.3%
| Duncan Bell | Conservative | 446 ✓ |
| Bridgit Croft | Labour | 250 |
| Ayesha Rohale | Liberal Democrats | 126 |
| Roy Bettles | Green | 89 |
Hatfield West1 seat · turnout 25.4%
| Cathy Watson | Labour | 670 ✓ |
| Neil Atkin | Conservative | 644 |
| Barry Cross | Green | 169 |
| Hazel Marion Laming | Liberal Democrats | 133 |
Hollybush1 seat · turnout 23.8%
| Lynn Chesterman | Labour | 678 ✓ |
| Rich Newman | Conservative | 439 |
| Gillian Armstrong-Bridges | Liberal Democrats | 77 |
| Veryan Weston | Green | 73 |
Howlands1 seat · turnout 29.7%
| Alan Chesterman | Labour | 480 ✓ |
| Stan Tunstall | Conservative | 455 |
| Jill Weston | Green | 349 |
| Lynda Cowan | Liberal Democrats | 69 |
Northaw and Cuffley1 seat · turnout 30.8%
| Colin Couch | Conservative | 1,023 ✓ |
| Mike Alder | Labour | 133 |
| Brian Edward Edwards | Green | 127 |
| Nigel Anthony van Someren Bain | Liberal Democrats | 63 |
Panshanger1 seat · turnout 25.5%
| Sara Louise Clare Johnston | Conservative | 709 ✓ |
| James Broach | Labour | 360 |
| Matthew Knight | Green | 143 |
| Shirley Shaw | Liberal Democrats | 75 |
Peartree1 seat
| Malcolm Cowan | Liberal Democrats | 474 ✓ |
| Mark Biddle | Labour | 469 |
| Steve Jackson | Conservative | 242 |
| Louise Lotz | Green | 107 |
Sherrards1 seat · turnout 38.5%
| Alan Franey | Conservative | 835 ✓ |
| Tony Crump | Labour | 574 |
| Susan Groom | Green | 200 |
| Jonquil Basch | Liberal Democrats | 132 |
Welwyn East1 seat · turnout 34.4%
| Julie Cragg | Conservative | 1,144 ✓ |
| Shelly Harris | Labour | 280 |
| Edward Walkington | Liberal Democrats | 126 |
| Adrian Toole | Green | 116 |
Welwyn West1 seat · turnout 38.2%
| Sandra Anne Kyriakides | Independent | 559 ✓ |
| Paul Graham Smith | Conservative | 510 |
| Margaret White | Labour | 119 |
| William Nicholas Huggonson Berrington | Green | 68 |