2011 Castlereagh Borough Council election

Elections to Castlereagh Borough Council were held on 5 May 2011 on the same day as the other Northern Irish local government elections. The election used four district electoral areas to elect a total of 23 councillors.

Election results
Note: "Votes" are the first preference votes.

Districts summary
!rowspan=2 align="left"|Ward ! %
 * - class="unsortable" align="centre"

!Cllrs

! %

!Cllrs

! %

!Cllrs

! %

!Cllrs

! %

!Cllrs

! %

!Cllrs

!rowspan=2|Total Cllrs

!colspan=2 bgcolor="" | DUP !colspan=2 bgcolor="" | Alliance !colspan=2 bgcolor="" | UUP !colspan=2 bgcolor="" | SDLP !colspan=2 bgcolor="" | Green !colspan=2 bgcolor="white"| Others
 * - class="unsortable" align="center"
 * align="left"|Castlereagh Central
 * bgcolor="#D46A4C"|41.4
 * bgcolor="#D46A4C"|3
 * 28.8
 * 2
 * 12.9
 * 1
 * 5.7
 * 0
 * 0.0
 * 0
 * 11.2
 * 0
 * 6
 * align="left"|Castlereagh East
 * bgcolor="#D46A4C"|56.0
 * bgcolor="#D46A4C"|4
 * 26.3
 * 2
 * 5.6
 * 1
 * 0.0
 * 0
 * 7.7
 * 1
 * 4.4
 * 0
 * 7
 * align="left"|Castlereagh South
 * bgcolor="#D46A4C"|36.5
 * bgcolor="#D46A4C"|2
 * 19.6
 * 1
 * 12.0
 * 1
 * 22.6
 * 0
 * 0.0
 * 0
 * 9.3
 * 0
 * 5
 * align="left"|Castlereagh West
 * bgcolor="#D46A4C"|32.7
 * bgcolor="#D46A4C"|2
 * 27.0
 * 1
 * 16.1
 * 1
 * 17.3
 * 1
 * 0.0
 * 0
 * 6.9
 * 0
 * 5
 * - class="unsortable" class="sortbottom" style="background:#C9C9C9"
 * align="left"| Total
 * 42.6
 * 11
 * 25.2
 * 6
 * 11.2
 * 3
 * 11.0
 * 2
 * 2.9
 * 1
 * 7.1
 * 0
 * 23
 * }
 * 7.1
 * 0
 * 23
 * }
 * }

Castlereagh Central
2005: 4 x DUP, 1 x Alliance, 1 x UUP

2011: 3 x DUP, 2 x Alliance, 1 x UUP

2005-2011 Change: Alliance gain from DUP

Castlereagh East
2005: 5 x DUP, 1 x Alliance, 1 x UUP

2011: 4 x DUP, 2 x Alliance, 1 x Green

2005-2011 Change: Alliance and Green gain from DUP and UUP

Castlereagh South
2005: 2 x DUP, 1 x SDLP, 1 x Alliance, 1 x UUP

2011: 2 x DUP, 1 x SDLP, 1 x Alliance, 1 x UUP

2005-2011 Change: No change

Castlereagh West
2005: 2 x DUP, 1 x Alliance, 1 x SDLP, 1 x UUP

2011: 2 x DUP, 1 x Alliance, 1 x SDLP, 1 x UUP

2005-2011 Change: No change