| Name | Party | Ward | End of Term |
|---|
| Stephen Boulton | Conservative and Unionist Party | Brookmans Park and Little Heath | 07-05-2020 |
| Rebecca Louise Lass | Conservative and Unionist Party | Brookmans Park and Little Heath | 05-05-2022 |
| Jonathan Boulton | Conservative and Unionist Party | Brookmans Park and Little Heath | 04-05-2023 |
| Mike Larkins | Labour Party | Haldens | 07-05-2020 |
| Lucy Musk | Labour Party | Haldens | 05-05-2022 |
| Barbara Fitzsimon | Conservative and Unionist Party | Haldens | 04-05-2023 |
| Fiona Thomson | Conservative and Unionist Party | Handside | 07-05-2020 |
| Siobhan Elam | Liberal Democrats | Handside | 05-05-2022 |
| Anthony Dennis | Liberal Democrats | Handside | 04-05-2023 |
| Maureen Cook | Labour Party | Hatfield Central | 07-05-2020 |
| Pankit Shah | Labour Party | Hatfield Central | 05-05-2022 |
| Glyn Hayes | Labour Party | Hatfield Central | 04-05-2023 |
| Peter Hebden | Conservative and Unionist Party | Hatfield East | 05-05-2022 |
| Edward F Boulton | Conservative and Unionist Party | Hatfield East | 07-05-2020 |
| Caron Juggins | Conservative and Unionist Party | Hatfield East | 04-05-2023 |
| Kieran Thorpe | Labour Party | Hatfield South West | 05-05-2022 |
| James Broach | Labour Party | Hatfield South West | 07-05-2020 |
| Lenny Brandon | Labour Party | Hatfield South West | 04-05-2023 |
| Duncan Bell | Conservative and Unionist Party | Hatfield Villages | 05-05-2022 |
| Samuel Kasumu | Conservative and Unionist Party | Hatfield Villages | 07-05-2020 |
| Drew R Richardson | Conservative and Unionist Party | Hatfield Villages | 04-05-2023 |
| Lynn Chesterman | Labour Party | Hollybush | 05-05-2022 |
| Nick Pace | Conservative and Unionist Party | Hollybush | 07-05-2020 |
| Margaret Birleson | Labour Party | Hollybush | 04-05-2023 |
| Alan Chesterman | Labour Party | Howlands | 07-05-2020 |
| Max Holloway | Labour Party | Howlands | 05-05-2022 |
| Jill Weston | Labour Party | Howlands | 04-05-2023 |
| Bernard Sarson | Conservative and Unionist Party | Northaw and Cuffley | 05-05-2022 |
| Simon Wrenn | Conservative and Unionist Party | Northaw and Cuffley | 07-05-2020 |
| George Michaelides | Conservative and Unionist Party | Northaw and Cuffley | 04-05-2023 |
| Terry Mitchinson | Conservative and Unionist Party | Panshanger | 07-05-2020 |
| Ayesha Rohale | Liberal Democrats | Panshanger | 05-05-2022 |
| Jane Quinton | Liberal Democrats | Panshanger | 04-05-2023 |
| Malcolm Cowan | Liberal Democrats | Peartree | 07-05-2020 |
| Tamsin Francesa Jackson-Mynott | Liberal Democrats | Peartree | 05-05-2022 |
| Jayne L Ranshaw | Liberal Democrats | Peartree | 04-05-2023 |
| Harry Bower | Conservative and Unionist Party | Sherrards | 07-05-2020 |
| Jean-Paul Bernard Skoczylas | Liberal Democrats | Sherrards | 05-05-2022 |
| Frank A Marsh | Liberal Democrats | Sherrards | 04-05-2023 |
| Helen Quenet | Liberal Democrats | Welham Green and Hatfield South | 05-05-2022 |
| Paul Zukowskyj | Liberal Democrats | Welham Green and Hatfield South | 07-05-2020 |
| Jaida Esin Caliskan | Liberal Democrats | Welham Green and Hatfield South | 04-05-2023 |
| Julie Cragg | Conservative and Unionist Party | Welwyn East | 07-05-2020 |
| Steven Markiewicz | Conservative and Unionist Party | Welwyn East | 05-05-2022 |
| Roger Trigg | Conservative and Unionist Party | Welwyn East | 04-05-2023 |
| Sunny Thusu | Conservative and Unionist Party | Welwyn West | 05-05-2022 |
| Paul R Smith | Conservative and Unionist Party | Welwyn West | 07-05-2020 |
| Tony Kingsbury | Conservative and Unionist Party | Welwyn West | 04-05-2023 |