Before (end of 1979) (43 seats, Elections Centre)
Labour 22 · Conservative 21 · Other 0 · The Liberal Party 0
After (end of 1980) (43 seats, Elections Centre)
Labour 25 · Conservative 18 · The Liberal Party 0 · Other 0
Ward results
Brookmans Park & Little Heath1 seat · turnout 47.3%
| E. Clear-Hill | Conservative | 1,828 |
| S. Prowse | Labour | 254 |
Haldens1 seat · turnout 49.6%
| W. O'Neill | Labour | 2,216 |
| H. Bennett | Conservative | 1,128 |
Handside1 seat · turnout 54.8%
| D. Lewis | Conservative | 1,595 |
| J. Stephens | Labour | 803 |
| M. Wood | LIB | 410 |
Hatfield East1 seat · turnout 46.2%
| P. Barnes | Conservative | 1,450 |
| Thomas Richard Lloyd | Labour | 1,027 |
Hatfield North1 seat · turnout 55.9%
| F Clayton | Labour | 1,608 |
| W Storey | Conservative | 1,019 |
Hollybush1 seat · turnout 50.1%
| R. Keatley | Labour | 1,788 |
| R. Chapman | Conservative | 510 |
Northaw & Cuffley1 seat · turnout 41.8%
| J. Pritchard | Conservative | 1,497 |
| E Shelton | Labour | 279 |
Peartree1 seat · turnout 42.9%
| U. Bennett | Labour | 1,637 |
| S. Jackson | Conservative | 369 |
Welwyn South1 seat · turnout 46.2%
| M. Gambling | Conservative | 708 ✓ |
| W. Emmerson | Labour | 354 |
| D. Sharp | Independent | 175 |
| J. Blackburn | LIB | 117 |
