Before (end of 1989) (48 seats, Elections Centre)
Conservative 24 · Labour 20 · Liberal Democrats 3 · Other 1
After (end of 1990) (48 seats, Elections Centre)
Labour 25 · Conservative 20 · Liberal Democrats 2 · Other 1
Ward results
Adlington1 seat · turnout 53.6%
| E. Shone | Labour | 1,620 |
| J. Keenan | Conservative | 566 |
| P. Pilling | SLD | 233 |
Anderton Heath Charnock & Rivington1 seat · turnout 52.4%
| E. Raby | Conservative | 580 |
| I. Rees | Labour | 577 |
| E. Isaac | SLD | 134 |
Anglezarke Heapey & Wheelton1 seat · turnout 57.4%
| M. Gray | Conservative | 369 |
| S Turner | Labour | 267 |
| J. Ross-Mills | SLD | 76 |
Chorley East1 seat · turnout 46.0%
| Pete Lowe | Labour | 1,363 |
| N. Bentley | Conservative | 279 |
| R. Jones | Green | 163 |
Chorley North East1 seat · turnout 50.0%
| D. Edgerley | Labour | 1,433 ✓ |
| I. Glynn | Conservative | 401 |
| A. Taylor | SLD | 119 |
| J. Manwaring | Green | 94 |
Chorley North West1 seat · turnout 55.2%
| M. McGrath | Labour | 1,222 ✓ |
| G. Smith | Conservative | 1,149 |
| R. Bradshaw | SLD | 289 |
| D. Russell | Green | 226 |
Chorley South East1 seat · turnout 55.5%
| M. Coombes | Labour | 1,514 ✓ |
| P. Haughton | Conservative | 580 |
| D. Pilling | SLD | 137 |
| M. Holgate | Green | 102 |
Chorley South West1 seat · turnout 52.7%
| J. Wilson | Labour | 1,789 ✓ |
| P. Malpas | Conservative | 361 |
| P. Tate | APT | 131 |
| R. Logie | Green | 121 |
Chorley West1 seat · turnout 56.4%
| T. Brown | Labour | 1,475 ✓ |
| P. Knowles | Conservative | 555 |
| F. Wilson | SLD | 301 |
| J. Logie | Green | 116 |
Clayton-Le-Woods East1 seat · turnout 42.2%
| S. Jones | SLD | 1,018 ✓ |
| D. Simkin | Conservative | 843 |
| E Murphy | Labour | 767 |
| S. Lewin | Green | 108 |
Clayton-le-Woods West and Cuerden1 seat · turnout 51.0%
| C. Corcoran | Labour | 711 |
| Muncaster M. | Conservative | 655 |
| M. D'Eye | SLD | 180 |
Coppull North1 seat · turnout 57.1%
| J. Meadows | Labour | 995 |
| B. Mayock | Ind DEM | 658 |
Coppull South1 seat · turnout 55.0%
| A. Lowe | Labour | 850 |
| L. Akroyd | SLD | 839 |
Eccleston & Heskin1 seat · turnout 53.9%
| Alan Whittaker | Labour | 1,445 |
| J. Burke | Conservative | 608 |
| C. Manwaring | Green | 138 |
Euxton North1 seat · turnout 60.4%
| Gee D. | Labour | 820 |
| Jean Rigby | Conservative | 708 |
| L. Dutton | SLD | 112 |
Mawdesley1 seat · turnout 58.5%
| F. Culshaw | Conservative | 506 |
| E Forshaw | Labour | 302 |
Whittle Le Woods1 seat · turnout 52.0%
| J. Bell | Conservative | 708 |
| R. Crook | Labour | 583 |
| D. Pearson | SLD | 173 |