Before (end of 1986) (45 seats, Elections Centre)
Conservative 22 · SDP-Liberal Alliance 12 · Other 10 · Labour 1
After (end of 1987) (45 seats, Elections Centre)
SDP-Liberal Alliance 21 · Conservative 15 · Other 5 · Labour 4
Ward results
Arwenack2 seats · turnout 44.4%
| I. Laws | Conservative | 588 |
| O. White | Conservative | 530 |
| B. Morris | Lib/Sdp | 455 |
| R. Dunstan | Independent | 447 |
| R. Hicks | Independent | 398 |
Boscawen3 seats · turnout 33.7%
| R. Penhaligon | Lib/Sdp | 1,005 |
| M. Cox | Lib/Sdp | 862 |
| P. Young | Lib/Sdp | 806 |
| M Payne | Independent | 601 |
| D. Rowe | Independent | 578 |
| A. Cunningham | Labour | 172 |
Chacewater1 seat · turnout 48.7%
| R Lobb | Independent | 359 |
| G. Gosnay | Lib/Sdp | 160 |
| A. Woolcock | Independent | 57 |
Kea1 seat · turnout 51.7%
| P. Allen | Lib/Sdp | 424 |
| P. Buddell | Conservative | 187 |
Kenwyn2 seats · turnout 23.9%
| F. Dyer | Conservative | 724 |
| C. Blowers | Lib/Sdp | 707 |
| R. Evans | Labour | 140 |
Moresk2 seats · turnout 38.4%
| S. Shaw | Lib/Sdp | 705 |
| B. Bailey | Lib/Sdp | 627 |
| I. Churchill | Independent | 375 |
| R. Cunningham | Labour | 92 |
Mylor3 seats · turnout 43.1%
| K. Dale | Conservative | 1,233 |
| M. Burden | Conservative | 1,196 |
| A. Fisher | Conservative | 1,023 |
| P. Davis | Independent | 968 |
| M. Spargo | Lib/Sdp | 762 |
| A. Webb | Lib/Sdp | 643 |
Newlyn1 seat · turnout 52.3%
| S. Skinner | Lib/Sdp | 525 |
| S. Norfolk | Conservative | 455 |
| C. Tankard | Independent | 52 |
Penryn3 seats · turnout 31.5%
| J. Barringer | Independent | 868 |
| D. Hocking | Lib/Sdp | 842 |
| J. Chinn | Conservative | 835 |
| J. Kent | Lib/Sdp | 743 |
| G. Maccuish | Independent | 719 |
Penwerris3 seats · turnout 31.0%
| L. Cottington | Labour | 888 |
| G. Greene | Labour | 830 |
| B. Wright | Labour | 736 |
| K. Lilly | Lib/Sdp | 625 |
| D. Martin | Independent | 602 |
| R. O'Neill | Independent | 470 |
Perranzabuloe3 seats · turnout 30.3%
| D. Crofts | Lib/Sdp | 962 |
| D. Hancock | Independent | 956 |
| S. Parker | Independent | 913 |
| R. Woolford | Independent | 459 |
| V. Bennett | Labour | 227 |
Roseland2 seats · turnout 59.1%
| T. Dunstone | Conservative | 895 |
| A. Moyle | Conservative | 885 |
| S. Mennear | Lib/Sdp | 725 |
| R. Bowcock | Lib/Sdp | 684 |
Smithick3 seats
| J. Pearce | Lib/Sdp | 0 ✓ |
| I. Medlyn | Conservative | 0 ✓ |
| D. Shindler | Labour | 0 ✓ |
St Agnes3 seats · turnout 28.8%
| F. Cheshire | Lib/Sdp | 1,703 |
| J. Pound | Lib/Sdp | 1,433 |
| O. Richards | Independent | 989 |
| A. McDougall | Labour | 290 |
St. Clement1 seat · turnout 50.0%
| G. Richards | Conservative | 622 |
| C. Scott | Lib/Sdp | 435 |
Tregolls2 seats · turnout 38.6%
| R. Cox | Lib/Sdp | 628 |
| M. Pryor | Lib/Sdp | 554 |
| W. Flooks | Independent | 319 |
| F. Solomon | Independent | 315 |
| T. Hall | Labour | 105 |
Trehaverne3 seats · turnout 34.5%
| A. Penhaligon | Lib/Sdp | 1,446 |
| M. Pryor | Lib/Sdp | 1,302 |
| J. Longhurst | Lib/Sdp | 1,065 |
| T. Smale | Labour | 260 |
Trevethan3 seats · turnout 40.7%
| G. Harrison | Conservative | 1,301 |
| H. Smith | Conservative | 1,272 |
| J. Beresford | Conservative | 1,241 |
| T. Roskilly | Lib/Sdp | 1,090 |
| M. Walters | Labour | 635 |