Before (end of 2010) (58 seats, Elections Centre)
Liberal Democrats 30 · Conservative 24 · Labour 3 · Other 1
After (end of 2011) (58 seats, Elections Centre)
Conservative 29 · Liberal Democrats 24 · Labour 3 · Other 2
Ward results
Cunningham1 seat
| R. Donald | Liberal Democrats | 990 ✓ |
| J. Vessey | Conservative | 741 |
| J. Paton | Labour | 500 |
| G. Riener | Green | 159 |
Harpenden East1 seat · turnout 49.0%
| Michael Wakely | Conservative | 1,445 ✓ |
| Andy Upton | Liberal Democrats | 661 |
| V. Windle | Labour | 346 |
| L. Hann | Green | 220 |
Harpenden North1 seat · turnout 50.9%
| Bert Pawle | Conservative | 1,591 ✓ |
| Gordon Burrow | Liberal Democrats | 491 |
| Ramsay Ross | Labour | 369 |
| Alex Tate | Green | 226 |
Harpenden South1 seat · turnout 51.9%
| Brian Ellis | Conservative | 1,893 ✓ |
| Maria Louise Moyses | Liberal Democrats | 388 |
| Linda Ann Spiri | Labour | 332 |
| Tony Grover | Green | 165 |
Marshalswick North1 seat · turnout 52.7%
| Geoffrey Churchard | Liberal Democrats | 1,076 ✓ |
| John Palmer Foster | Conservative | 1,031 |
| Richard Harris | Labour | 355 |
| Rosalind Mary Paul | Green | 173 |
Marshalswick South1 seat
| M Gaygusuz | Conservative | 1,433 ✓ |
| Heather Teare | Liberal Democrats | 776 |
| Ruairi McCourt | Labour | 560 |
| Jill Mills | Green | 303 |
Sandridge1 seat · turnout 49.9%
| Frances Leonard | Conservative | 1,087 ✓ |
| Sheila Clegg | Liberal Democrats | 397 |
| Jane Cloke | Labour | 307 |
| Ian Troughton | Green | 158 |
St. Stephen1 seat
| Gordon Myland | Conservative | 1,467 ✓ |
| D. Downs | Liberal Democrats | 698 |
| A. Breed | Labour | 290 |
| A. Baker | Green | 181 |