Before (end of 1978)
Not known.
After (end of 1979)
Not known.
Ward results
Ward 13 seats
| M. Gimblett | LIB | 2,515 ✓ |
| E. Lloyd | LIB | 2,053 ✓ |
| H. Richards | Independent | 1,972 ✓ |
| E. Davies | Labour | 1,662 |
| R. Thorpe | Labour | 1,439 |
| J. Smith | Labour | 1,388 |
| G. Morris | Plaid Cymru - The Party of Wales | 1,106 |
Ward 103 seats · turnout 59.7%
| D. Lewis | Labour | 2,750 |
| E. Thomas | Labour | 2,712 |
| D. White | Labour | 2,517 |
| H. Williams | Conservative | 1,787 |
| B. Lane | Plaid Cymru - The Party of Wales | 1,510 |
Ward 113 seats · turnout 64.2%
| S. Davies | Labour | 2,645 |
| E. Morgan | Labour | 2,538 |
| A. Rees | Labour | 2,456 |
| T. Morris | RATE | 2,384 |
| P. Davies | Ind Lab | 1,965 |
Ward 23 seats
| W. Jones | Labour | 2,121 ✓ |
| R. Peregrine | Labour | 1,991 ✓ |
| D. Jones | Labour | 1,974 ✓ |
| W. Bates | Conservative | 1,141 |
| P. Davies | Plaid Cymru - The Party of Wales | 751 |
| W. Phillips | Plaid Cymru - The Party of Wales | 656 |
| D. Thomas | Plaid Cymru - The Party of Wales | 599 |
Ward 33 seats
| T. Thomas | Labour | 2,581 ✓ |
| D. Williams | Labour | 2,267 ✓ |
| T. Evans | Labour | 2,257 ✓ |
| I. Rosser | LIB | 1,062 |
| J. Phillips | LIB | 959 |
| S. Chrinowsky | LIB | 807 |
Ward 43 seats
| G. Rees | Labour | 2,153 |
| D. James | Labour | 1,882 |
| I. Williams | Labour | 1,537 |
| I. Roberts | Ind Lab | 1,515 |
| R. Palmer | Labour | 1,439 |
| L. Murley | Labour | 1,258 |
| G. Williams | Independent | 1,188 |
| R. Micholson | Conservative | 929 |
Ward 53 seats · turnout 84.8%
| G. Jones | Labour | 2,631 ✓ |
| H. Jenkins | Labour | 2,069 ✓ |
| F. Owens | Labour | 2,040 ✓ |
| P. Morris | RATE | 1,440 |
| V. Bevan | Independent | 598 |
Ward 63 seats · turnout 70.6%
| R. James | Labour | 2,190 |
| D. George | Independent | 1,968 |
| G. Thomas | Independent | 1,549 |
| E. Richards | Labour | 1,194 |
| G. West | Independent | 1,182 |
| M. Clement | Plaid Cymru - The Party of Wales | 714 |
| J. Maunder | Labour | 587 |
| I. Richard | Plaid Cymru - The Party of Wales | 491 |
Ward 73 seats
| G. Jones | Labour | 2,627 ✓ |
| S. Coslett | Labour | 2,439 ✓ |
| R. Lewis | Labour | 2,392 ✓ |
| T. Fennell | Plaid Cymru - The Party of Wales | 1,735 |
| J. Willock | SW | 736 |
Ward 84 seats
| H. Evans | Labour | 2,953 |
| L. McDonag | Labour | 2,897 |
| E. Williams | Labour | 2,542 |
| A. Bowen | Independent | 2,541 |
| W. Davies | Labour | 2,438 |
| R. Jones | Labour | 2,246 |
| C. Lewis | Labour | 2,226 |
| L. Murphy | Labour | 2,218 |
| T. Howells | Conservative | 1,813 |
| J. Donovan | Plaid Cymru - The Party of Wales | 1,560 |
| R. Hitchon | COMM | 844 |
