Before (end of 2010) (48 seats, Elections Centre)
Conservative 40 · Labour 5 · Liberal Democrats 3 · Other 0
After (end of 2011) (48 seats, Elections Centre)
Conservative 37 · Labour 9 · Liberal Democrats 2 · Other 0
Ward results
| Irene Hilda Dean | Conservative | 1,736 ✓ |
| Jennifer Blumsom | Liberal Democrats | 293 |
| Donald Mahon | Labour | 290 |
Haldens1 seat · turnout 41.8%
| Mike Larkins | Labour | 898 ✓ |
| Howard Hughes | Conservative | 787 |
| Shirley Shaw | Liberal Democrats | 185 |
| Berenice Constance Mary Dowlen | Green | 166 |
Handside1 seat · turnout 58.1%
| Fiona Thomson | Conservative | 1,603 ✓ |
| Nigel Alan Quinton | Liberal Democrats | 970 |
| Sarah Carthew | Labour | 515 |
Hatfield Central1 seat · turnout 31.4%
| Colin George Croft | Labour | 789 ✓ |
| Michal Siewniak | Conservative | 535 |
| Tom Bailey | Liberal Democrats | 226 |
Hatfield East1 seat · turnout 41.2%
| Bernard Sarson | Conservative | 1,066 ✓ |
| Laura Vivienne Cook | Labour | 682 |
| Lis Meyland-Smith | Liberal Democrats | 281 |
Hatfield Villages1 seat · turnout 30.2%
| Lynne Michele Sparks | Conservative | 742 ✓ |
| Bridgit Croft | Labour | 358 |
| Ayesha Rohale | Liberal Democrats | 142 |
Hatfield West1 seat · turnout 36.2%
| Kim Elizabeth Langley | Conservative | 1,030 ✓ |
| Cathy Watson | Labour | 855 |
| Hazel Marion Laming | Liberal Democrats | 211 |
Hollybush1 seat · turnout 35.1%
| Margaret Birleson | Labour | 999 ✓ |
| Sarah Atkinson | Conservative | 695 |
| Gillian Armstrong-Bridges | Liberal Democrats | 197 |
Howlands2 seats · turnout 43.4%
| David Barnaby John Hughes | Conservative | 769 ✓ |
| Alan Chesterman | Labour | 688 ✓ |
| Stan Tunstall | Conservative | 609 |
| Dean Milliken | Labour | 568 |
| Jill Weston | Green | 397 |
| Caroline Duke | Liberal Democrats | 135 |
| Jonquil Basch | Liberal Democrats | 100 |
Northaw & Cuffley1 seat
| A Prest | Conservative | 1,649 ✓ |
| M. Alder | Labour | 231 |
| N. Bain | Liberal Democrats | 153 |
Panshanger1 seat · turnout 38.8%
| Darren Malcolm Bennett | Conservative | 1,054 ✓ |
| Simon Chander | Labour | 609 |
| Matthew Knight | Green | 146 |
| Konrad Basch | Liberal Democrats | 143 |
Peartree1 seat
| Steve Roberts | Labour | 710 ✓ |
| Louise Lotz | Liberal Democrats | 481 |
| Rich Newman | Conservative | 478 |
Sherrards1 seat · turnout 51.9%
| Pat Mabbott | Conservative | 1,199 ✓ |
| Tony Crump | Labour | 719 |
| Susan Groom | Green | 212 |
| Frank Annibale Stefano Marchio Marsh | Liberal Democrats | 206 |
Welham Green1 seat · turnout 43.2%
| Les Page | Conservative | 778 ✓ |
| Diana Lesley Bell | Labour | 291 |
| Sheila Archer | Liberal Democrats | 109 |
| Peter Hastings | Independent | 84 |
Welwyn East1 seat · turnout 51.1%
| Carl Storer | Conservative | 1,767 ✓ |
| John Pomroy | Labour | 388 |
| June Burnham | Liberal Democrats | 316 |
Welwyn West1 seat · turnout 47.7%
| Mandy Perkins | Conservative | 1,046 ✓ |
| Benjamin Yetts | Labour | 270 |
| Jonathan Arch | Liberal Democrats | 188 |