Before (end of 2017) (49 seats, Elections Centre)
Conservative 34 · Labour 12 · Liberal Democrats 3 · Other 0
After (end of 2018) (49 seats, Open Council Data)
Conservative 29 · Labour 14 · Liberal Democrats 6
Ward results
Baldock Town1 seat · turnout 32.8%
| Jim McNally | Conservative | 970 ✓ |
| Alec Maguire | Labour | 579 |
| Richard William Winter | Liberal Democrats | 253 |
| Heidi Shona Mollart-Griffin | Green | 106 |
CODICOTE1 seat · turnout 43.1%
| Ian Moody | Conservative | 524 ✓ |
| Tom Brindley | Independent | 172 |
| Richard Paul Downey | Labour | 136 |
| Luke Devenish | Liberal Democrats | 49 |
| Rosemary Anne Bland | Green | 38 |
Hitchin Bearton1 seat · turnout 33.6%
| Val Bryant | Labour | 1,212 ✓ |
| John William Skeeles | Conservative | 474 |
| Jon Clayden | Liberal Democrats | 287 |
| William Lavin | Green | 168 |
Hitchin Highbury1 seat · turnout 42.7%
| Sam S Collins | Liberal Democrats | 1,266 ✓ |
| Dominic Griffiths | Conservative | 801 |
| Conor Brogan | Labour | 443 |
| Diana J Newson | Green | 148 |
Hitchin Oughton1 seat · turnout 29.3%
| Clare Billing | Labour | 591 ✓ |
| Robyn Rebecca Reidy | Conservative | 312 |
| Louise Jane Peace | Liberal Democrats | 100 |
| Mary Karin Marshall | Green | 83 |
Hitchin Priory1 seat · turnout 42.9%
| Simon Mark Harwood | Conservative | 660 ✓ |
| George Osborn | Liberal Democrats | 512 |
| Dave Winstanley | Labour | 308 |
| Des Stephens | Green | 123 |
Hitchin Walsworth1 seat · turnout 37.9%
| Mike Hughson | Labour | 1,114 ✓ |
| Alan John Millard | Conservative | 693 |
| Richard Alexander Cano | Green | 272 |
| Andrew Ircha | Liberal Democrats | 230 |
Hitchwood Offa & Hoo1 seat · turnout 34.9%
| Faye Frost | Conservative | 1,279 ✓ |
| Anton Jungreuthmayer | Labour | 369 |
| David Ashton | Green | 200 |
| Marilyn Margaret Parkin | Liberal Democrats | 181 |
KIMPTON1 seat · turnout 37.5%
| John Cyril Bishop | Conservative | 426 ✓ |
| Michael Lott | Liberal Democrats | 99 |
| Tom Hogan | Labour | 97 |
| Simon Wightman | Green | 52 |
Knebworth1 seat · turnout 44.5%
| Lisa Nash | Liberal Democrats | 957 ✓ |
| Steve Hemingway | Conservative | 742 |
| Klazina Hofmann | Labour | 141 |
| Nick Newson | Green | 29 |
Letchworth East1 seat · turnout 32.6%
| Sue Ngwala | Labour | 763 ✓ |
| Andrew Clare | Conservative | 369 |
| Paul Ross | Independent | 160 |
| Liam McKenna | Liberal Democrats | 114 |
| Bernard Charles Michael Lee | Green | 71 |
Letchworth Grange2 seats · turnout 37.8%
| Daniel Allen | Labour | 917 ✓ |
| Helen Caroline Oliver | Labour | 912 ✓ |
| Morgan Derbyshire | Conservative | 798 |
| Matthew Berman | Conservative | 747 |
| Amy Elizabeth Finch | Liberal Democrats | 240 |
| Aidan Sparrowhawk | Liberal Democrats | 198 |
| Elizabeth Susan Hancock | Green | 166 |
Letchworth South East1 seat · turnout 35.0%
| Kate Aspinwall | Labour | 758 ✓ |
| John Booth | Conservative | 750 |
| Barry Peter Neale | Liberal Democrats | 229 |
| Sidney Arthur Start | UK Independence Party (UKIP) | 109 |
| Tim Lee | Green | 91 |
Letchworth South West1 seat · turnout 38.9%
| Michael Rice | Conservative | 1,045 ✓ |
| Sean Prendergast | Liberal Democrats | 642 |
| Jean Andrews | Labour | 516 |
| Maryla Josephine Hart | Green | 182 |
Letchworth Wilbury1 seat · turnout 35.2%
| Gary Grindal | Labour | 841 ✓ |
| John Peter Hamilton Merry | Conservative | 387 |
| Ian Huw John Clayfield | Green | 141 |
| Brian John Evans | Liberal Democrats | 73 |
Royston Heath1 seat · turnout 43.3%
| Ruth Brown | Liberal Democrats | 864 ✓ |
| Fiona Hill | Conservative | 786 |
| Kenneth Garland | Labour | 198 |
| Katherine Marie Shann | Green | 74 |
Royston Meridian1 seat · turnout 34.4%
| Bill Davidson | Conservative | 789 ✓ |
| Karen Harmel | Green | 253 |
| Jess Finn | Labour | 246 |
| David Matthew Lambert | Liberal Democrats | 135 |
Royston Palace1 seat · turnout 30.8%
| Barry Lewis | Conservative | 585 ✓ |
| Robert Inwood | Labour | 454 |
| Peter Martin Rice | Liberal Democrats | 214 |
| Angela Clark | Green | 96 |