Before (end of 1987) (51 seats, Elections Centre)
Labour 31 · Conservative 11 · SDP-Liberal Alliance 5 · Other 4 · Plaid Cymru - The Party of Wales 0
After (end of 1988) (51 seats, Elections Centre)
Labour 29 · Conservative 10 · Liberal Democrats 7 · Other 5 · Plaid Cymru - The Party of Wales 0
Ward results
Bon-y-maen1 seat · turnout 30.4%
| D. Watkins | Labour | 1,411 |
| T. Goatley | SLD | 262 |
Castle1 seat · turnout 30.8%
| D. Roberts | Labour | 1,766 |
| W. Jones | Conservative | 786 |
| S. Frazer | SLD | 298 |
Cockett2 seats · turnout 26.1%
| D. Anthony | Labour | 1,884 |
| W. Dyer | Labour | 1,843 |
| M. Jones | SLD | 575 |
| S. Gorman | Conservative | 519 |
| M. Thomas | SLD | 343 |
Cwmbwrla1 seat · turnout 54.7%
| P. Black | SLD | 2,532 |
| Nell Davies-Small | Labour | 882 |
| P. Nash | Conservative | 100 |
Llansamlet1 seat · turnout 26.4%
| L. Bailey | Labour | 1,494 |
| C. Bromham | SLD | 489 |
Morriston2 seats · turnout 28.5%
| R. Lloyd | Labour | 2,623 |
| J. France | Labour | 2,463 |
| G. Davies | SDP | 1,111 |
| P. Goulding | SLD | 648 |
| M. Ramos | SLD | 286 |
Mynydd-bach1 seat · turnout 40.3%
| A. Clement | RES | 1,827 |
| C. White | Labour | 1,373 |
North Gower1 seat · turnout 42.0%
| J. Guy | Labour | 1,236 |
| M. Williams | Conservative | 850 |
Penderry2 seats · turnout 25.1%
| J. Burtonshaw | Labour | 1,956 |
| B. Owen | Labour | 1,594 |
| D. Harkett | RES | 672 |
| A. Westwood | SLD | 361 |
Sketty1 seat · turnout 47.0%
| R. Stanton | Independent | 2,283 |
| T. Morgan | Conservative | 1,937 |
| M. Verma | Labour | 1,096 |
Townhill1 seat · turnout 51.0%
| H. Spooner | SLD | 1,947 |
| P. Macdonald-Murray | Labour | 1,571 |
| D. Phillips | Ind Lab | 190 |
Uplands1 seat · turnout 34.8%
| D. Phillips | Conservative | 1,880 ✓ |
| P. Lloyd | Labour | 1,368 |
| J. McInally | SLD | 347 |
| H. Moss | Independent | 91 |
West Cross1 seat · turnout 53.0%
| M. Caton | Labour | 1,498 |
| J. Peters | Conservative | 1,319 |
| M. Shrewsbury | SLD | 261 |
