Elections to North Down 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 25 councillors.

Note: "Votes" are the first preference votes.

2005: 3 x DUP, 2 x UUP, 1 x Alliance 2011: 4 x DUP, 1 x Alliance, 1 x Green 2005-2011 Change: DUP and Green gain from UUP (two seats) 2005: 2 x DUP, 2 x UUP, 2 x Independent, 1 x Alliance 2011: 3 x DUP, 2 x Independent, 1 x Alliance, 1 x UUP 2005-2011 Change: DUP gain from UUP 2005: 2 x DUP, 2 x UUP, 2 x Alliance, 1 x Green 2011: 2 x DUP, 2 x UUP, 2 x Alliance, 1 x Independent 2005-2011 Change: Green becomes Independent 2005: 2 x UUP, 2 x Alliance, 1 x DUP 2011: 2 x Alliance, 2 x DUP, 1 x UUP 2005-2011 Change: DUP gain from UUP