The result of the by-election for the Derwent Valley Division of Derbyshire County Council, held on 24 September 2015 is as follows:
| CRAPPER | Michael Bryan (Liberal Democrat) | 314 | |
| DAWSON | Michael Paul (UK Independence Party (UKIP)) | 285 | |
| RUTTER | Martin Joseph (Labour Party) | 466 | |
| WILD | Joanne (The Conservative Party Candidate) | 1107 | ELECTED |
The turnout was 22.86%.
Declaration of Result of Poll [PDF 0.13MB]