Before (end of 2020) (48 seats, Open Council Data)
Conservative 23 · Labour 13 · Liberal Democrats 12
After (end of 2021) (48 seats, Open Council Data)
Conservative 28 · Liberal Democrats 11 · Labour 9
Ward results
| Stephen Boulton | Conservative | 1,559 ✓ |
| Graham Martyn Beevers | Labour | 339 |
| Peter Edward Basford | Liberal Democrats | 232 |
Haldens1 seat · turnout 35.2%
| Hellyer A.I.W. | Conservative | 766 ✓ |
| Mike Larkins | Labour | 589 |
| Rhiannon Lillian Christine Richardson | Liberal Democrats | 245 |
| Sarah Butcher | Green | 153 |
Handside1 seat · turnout 51.6%
| Thomson F. | Conservative | 1,317 ✓ |
| Gemma May Louise Moore | Liberal Democrats | 1,003 |
| Beckett H.J. | Labour | 316 |
| Nendick I.N.C. | Green | 208 |
Hatfield Central1 seat · turnout 24.7%
| James Bond | Conservative | 580 ✓ |
| Maureen Cook | Labour | 571 |
| Kirk M.A. | Liberal Democrats | 122 |
| Melvyn Jones | ATC | 86 |
Hatfield East1 seat · turnout 32.1%
| Lake J.A. | Conservative | 810 ✓ |
| Watson C. | Labour | 552 |
| Snowdon R.T. | Liberal Democrats | 289 |
| Ian Howard Gregory | Green | 165 |
Hatfield South West1 seat · turnout 29.1%
| Stanbury C.R. | Conservative | 526 ✓ |
| James Broach | Labour | 515 |
| Tim Rowse | Liberal Democrats | 510 |
Hatfield Villages1 seat · turnout 31.6%
| Kasumu S.F. | Conservative | 774 ✓ |
| Eames-Petersen M.A. | Labour | 585 |
| Edwards A. | Liberal Democrats | 190 |
| Kukol A. | Green | 150 |
Hollybush1 seat · turnout 30.7%
| Pace N. | Conservative | 653 ✓ |
| Mbizo Mpofu | Labour | 583 |
| Corbey-West C.P. | Liberal Democrats | 148 |
| Ferlisi C.J. | Green | 139 |
Howlands1 seat · turnout 34.0%
| Steve McNamara | Conservative | 962 ✓ |
| Alan Chesterman | Labour | 680 |
| Konrad Basch | Liberal Democrats | 190 |
Northaw and Cuffley1 seat · turnout 39.9%
| Ganney G.M. | Conservative | 1,328 ✓ |
| Sheila Ann Barrett | Labour | 223 |
| Elizabeth Johnson | Liberal Democrats | 215 |
Panshanger1 seat · turnout 36.5%
| Tunstall S. | Conservative | 819 ✓ |
| Darrell Panter | Liberal Democrats | 491 |
| Joshua Murombo Chigwangwa | Labour | 343 |
Peartree1 seat
| Russ Platt | Liberal Democrats | 578 ✓ |
| Steve Iwasyk | Labour | 408 |
| Hamish Haddow | Conservative | 336 |
| Nicola Chapman | Green | 109 |
Sherrards1 seat · turnout 45.1%
| Wachuku F.O. | Conservative | 767 ✓ |
| Arvindkumar Hargovanbhai Thakkar | Liberal Democrats | 575 |
| Hilary Louise Carlen | Labour | 477 |
| Lesley Jean Smith | Green | 228 |
Welham Green and Hatfield South2 seats · turnout 33.2%
| Paul Zukowskyj | Liberal Democrats | 791 ✓ |
| Travell T.F. | Conservative | 727 ✓ |
| Lowe P.J. | Conservative | 543 |
| Griffiths R.H. | Liberal Democrats | 525 |
| Aicken G.F.H. | Labour | 258 |
| Eames-Petersen J.R. | Labour | 245 |
| M. Americanos-Molinaro | FBM | 42 |
Welwyn East1 seat · turnout 42.0%
| Julie Cragg | Conservative | 1,218 ✓ |
| Davis M. | Labour | 425 |
| Helen Natalie Harrington | Liberal Democrats | 278 |
| William Nicholas Huggonson Berrington | Green | 241 |
Welwyn West1 seat · turnout 39.1%
| Smith P.R. | Conservative | 1,231 ✓ |
| Berrington P. | Green | 262 |
| Carlen D.J. | Labour | 251 |
| Reimer A.R.B. | Liberal Democrats | 194 |