Before (end of 1977) (47 seats, Elections Centre)
Conservative 33 · Labour 11 · Other 3 · The Liberal Party 0
After (end of 1978) (47 seats, Elections Centre)
Conservative 32 · Labour 12 · Other 3 · The Liberal Party 0
Ward results
Anderton Heath Charnock & Rivington1 seat · turnout 35.0%
| M. Raby | Conservative | 638 |
| M. Farnworth | LIB | 160 |
Anglezarke Heapey & Wheelton1 seat · turnout 53.0%
| J. Turner | Conservative | 415 |
| M. Talbot | Labour | 122 |
Chorley East1 seat · turnout 36.0%
| K. Sandham | Labour | 1,038 |
| R. Charnley | Conservative | 519 |
Chorley North East1 seat · turnout 37.0%
| D. Edgerley | Labour | 848 |
| S. Jamieson | Conservative | 606 |
| E. Isaac | LIB | 64 |
Chorley North West1 seat · turnout 52.0%
| J. Glynn | Conservative | 1,133 |
| G. Broadhead | LIB | 254 |
| F. Baynham | Labour | 253 |
Chorley South East1 seat · turnout 39.0%
| E. Moss | Conservative | 875 ✓ |
| J. Crook | Labour | 770 |
Chorley South West1 seat · turnout 47.0%
| J. Wilson | Labour | 1,378 |
| P. Malpas | Conservative | 569 |
Chorley West1 seat · turnout 49.0%
| D. Whittington | Conservative | 1,204 |
| T. Gee | Labour | 837 |
| F. Wilson | LIB | 118 |
Clayton-Le-Woods West & Cuerden1 seat · turnout 31.0%
| R. Wharton | Conservative | 703 |
| D. Hardman | Labour | 243 |
Coppull North1 seat · turnout 49.0%
| J. Meadows | Labour | 817 |
| W. Hudson | Conservative | 431 |
Coppull South1 seat · turnout 42.0%
| D. Gladwinfield | Labour | 648 |
| J. Lewis | Conservative | 486 |
Eccleston & Heskin1 seat · turnout 33.0%
| A. Marsden | Conservative | 956 |
| T. Titherington | Labour | 288 |
Euxton North1 seat · turnout 50.0%
| J. Rigby | Conservative | 677 |
| F. Higson | Labour | 531 |
Mawdesley1 seat · turnout 37.0%
| F. Culshaw | Conservative | 384 |
| E. Warwick | Labour | 66 |
Whittle Le Woods1 seat · turnout 35.0%
| D. Burchell | Conservative | 490 ✓ |
| J. Waring | Labour | 206 |
| V. Farnworth | LIB | 130 |
| W. Bailey | Independent | 41 |
| G. Butler | Independent | 37 |