Before (end of 2002) (48 seats, Elections Centre)
Conservative 26 · Labour 22 · Other 0 · Liberal Democrats 0
After (end of 2003) (48 seats, Elections Centre)
Conservative 27 · Labour 21 · Liberal Democrats 0 · Other 0
Ward results
| Stephen Boulton | Conservative | 1,203 ✓ |
| Catherine Gerran Edwards | Liberal Democrats | 211 |
| Margaret White | Labour | 145 |
Haldens1 seat
| Mike Larkins | Labour | 652 ✓ |
| Stanley Jackson | Conservative | 345 |
| Helen Bassett | Liberal Democrats | 269 |
Handside1 seat
| Dennis Lewis | Conservative | 1,022 ✓ |
| David Cooke | Liberal Democrats | 1,002 |
| Lynn Chesterman | Labour | 279 |
Hatfield Central1 seat
| Maureen Janet Cook | Labour | 530 ✓ |
| Hazel Marion Laming | Liberal Democrats | 420 |
| Rhys Roberts | Conservative | 247 |
Hatfield East1 seat
| Mark Long | Conservative | 782 ✓ |
| Samuel Smith | Labour | 352 |
| Lisa Marie Smith | Liberal Democrats | 282 |
Hatfield North1 seat
| John Keith Morgan | Conservative | 539 ✓ |
| Margaret White | Labour | 398 |
| Michael Granville Rich | Liberal Democrats | 126 |
Hatfield South2 seats
| Alfred Appleby | Labour | 377 ✓ |
| Linda Elizabeth Mendez | Labour | 376 ✓ |
| Richard Simon Smith | Conservative | 175 |
| Andrew Peffer | Conservative | 164 |
| Richard Michael Griffiths | Liberal Democrats | 111 |
| Sheila Archer | Liberal Democrats | 108 |
Hatfield West1 seat
| John Hawkins | Conservative | 644 ✓ |
| Roy Moss | Labour | 509 |
| Simon John Archer | Liberal Democrats | 217 |
Hollybush1 seat · turnout 27.7%
| Alan Johnson | Labour | 623 ✓ |
| Yvonne Stanbury | Conservative | 280 |
| Janet Gammage | Liberal Democrats | 213 |
Howlands1 seat · turnout 28.9%
| Jill Weston | Labour | 627 ✓ |
| Marian Pile | Conservative | 364 |
| Jonathan Arch | Liberal Democrats | 220 |
Northaw1 seat
| John Mansfield | Conservative | 990 ✓ |
| Nigel Anthony van Someren Bain | Liberal Democrats | 148 |
| Sue Jones | Labour | 95 |
Panshanger1 seat
| Darren Malcolm Bennett | Conservative | 615 ✓ |
| Christopher Cory | Labour | 453 |
| Ted Naseby | Liberal Democrats | 381 |
Peartree1 seat · turnout 23.1%
| Steve Roberts | Labour | 491 |
| Wanda Armstrong-Bridges | Liberal Democrats | 362 |
| David Perkins | Conservative | 177 |
Sherrards1 seat
| John Burnapp | Conservative | 984 ✓ |
| Anthony Crump | Labour | 861 |
| Louise Lotz | Liberal Democrats | 311 |
Welwyn North1 seat
| Julie Cragg | Conservative | 664 ✓ |
| David Charles Bartlett | Liberal Democrats | 230 |
| Jan Burnell | Labour | 173 |
Welwyn South1 seat
| Richard Simon Smith | Conservative | 935 ✓ |
| Julia Henderson | Labour | 315 |
| Ian Skidmore | Liberal Democrats | 309 |