| Party | Name | Ward | End of Term | Byelection |
|---|
| CON | Mrs Hilary Fairclough | Astley Bridge | 07-05-2020 | - |
| CON | Dr John Walsh OBE Hon DUniv | Astley Bridge | 05-05-2022 | - |
| CON | Paul Wild | Astley Bridge | 02-05-2019 | - |
| CON | Mudasir Dean | Bradshaw | 05-05-2022 | - |
| CON | Stuart Haslam | Bradshaw | 02-05-2019 | - |
| CON | Jacqueline Radcliffe | Bradshaw | 07-05-2020 | - |
| LAB | John Byrne | Breightmet | 02-05-2019 | - |
| CON | Adele Warren | Breightmet | 05-05-2022 | - |
| IND | Debbie Newall | Breightmet | 07-05-2020 | - |
| CON | David Greenhalgh | Bromley Cross | 05-05-2022 | - |
| CON | Nadim Muslim | Bromley Cross | 07-05-2020 | - |
| CON | Norman Critchley | Bromley Cross | 02-05-2019 | - |
| LAB | Bilkis Ismail | Crompton | 05-05-2022 | - |
| LAB | Hanif Darvesh | Crompton | 07-05-2020 | - |
| LAB | Guy Harkin | Crompton | 02-05-2019 | - |
| IND | Paul Sanders | Farnworth | 07-05-2020 | - |
| IND | Maureen Flitcroft | Farnworth | 05-05-2022 | - |
| LAB | Jean Gillies | Farnworth | 02-05-2019 | - |
| LAB | Mohammed Iqbal | Great Lever | 07-05-2020 | - |
| LAB | Madeline Murray | Great Lever | 02-05-2019 | - |
| LAB | Mohammed Ayub | Great Lever | 05-05-2022 | - |
| LAB | Cliff Morris | Halliwell | 07-05-2020 | - |
| LAB | Mrs Linda Thomas | Halliwell | 02-05-2019 | - |
| LAB | Akhtar Zaman | Halliwell | 05-05-2022 | - |
| LAB | Susan Haworth | Harper Green | 02-05-2019 | - |
| LAB | Hamid Khurram | Harper Green | 05-05-2022 | - |
| LAB | Champak Mistry | Harper Green | 07-05-2020 | - |
| CON | Andrew Morgan | Heaton and Lostock | 07-05-2020 | - |
| CON | Anne Galloway | Heaton and Lostock | 05-05-2022 | - |
| CON | Robert Allen | Heaton and Lostock | 02-05-2019 | - |
| LAB | Stephen Pickup | Horwich and Blackrod | 02-05-2019 | - |
| CON | Susan Baines | Horwich and Blackrod | 05-05-2022 | - |
| LAB | Ann Cunliffe | Horwich and Blackrod | 07-05-2020 | - |
| LAB | Richard Silvester | Horwich North East | 07-05-2020 | - |
| LAB | Joyce Kellett | Horwich North East | 02-05-2019 | - |
| LAB | Kevin McKeon | Horwich North East | 05-05-2022 | - |
| LAB | Shafaqat Shaikh | Hulton | 02-05-2019 | - |
| CON | Diane Parkinson | Hulton | 05-05-2022 | - |
| CON | Toby Hewitt | Hulton | 07-05-2020 | - |
| LAB | Liam Irving | Kearsley | 02-05-2019 | - |
| IND | Julie Pattison | Kearsley | 05-05-2022 | - |
| UKI | Mark Cunningham | Kearsley | 07-05-2020 | - |
| UKI | Sean Hornby | Little Lever and Darcy Lever | 02-05-2019 | - |
| LAB | David Evans | Little Lever and Darcy Lever | 05-05-2022 | - |
| UKI | Rees Gibbon | Little Lever and Darcy Lever | 07-05-2020 | - |
| LAB | Shamim Abdullah | Rumworth | 07-05-2020 | - |
| LAB | Ebrahim Adia | Rumworth | 02-05-2019 | - |
| LAB | Ismail Ibrahim | Rumworth | 05-05-2022 | - |
| LD | Roger Hayes | Smithills | 07-05-2020 | - |
| LD | Doug Bagnall | Smithills | 05-05-2022 | - |
| IND | Mrs Carole Swarbrick | Smithills | 02-05-2019 | - |
| LAB | Elaine Sherrington | Tonge with the Haulgh | 02-05-2019 | - |
| LAB | Martin Donaghy | Tonge with the Haulgh | 07-05-2020 | - |
| LAB | Nicholas Peel | Tonge with the Haulgh | 05-05-2022 | - |
| CON | Zoe Kirk-Robinson | Westhoughton North and Chew Moor | 02-05-2019 | - |
| CON | Christine Wild | Westhoughton North and Chew Moor | 07-05-2020 | - |
| CON | Martyn Cox | Westhoughton North and Chew Moor | 05-05-2022 | - |
| LAB | Anna-Marie Watters | Westhoughton South | 07-05-2020 | - |
| LD | David Wilkinson | Westhoughton South | 05-05-2022 | - |
| LAB | David Chadwick | Westhoughton South | 02-05-2019 | - |