The nomination is her fourth and means her name will be included on the ballot for the Presidential Election on 27 October.
Carlow, Roscommon and Donegal county councils had already given the former MEP their support.
Four councils or 20 Oireachtas signatures are required to secure the nomination.
The nomination was proposed by Independent Cllr Johnny Butterfield. In moving the motion, the councillor had strong criticism for the national media – in particular RTÉ.
He said RTÉ had shown great bias to David Norris.
He claimed the Senator had featured on “every news and current affairs programme as if there was no other candidate”.
The councillor also criticised the Mr Norris interview on the Late Late Show and said: “It was obvious he knew the questions in advance and had his answers prepared”.
Before making his comments, Cllr Butterfield said while he was supporting Dana for the Presidency, he would not criticise any other candidates in the field.
Speaking after securing the support of Donegal County Council this morning, Ms Scallon she was very moved by the members’ generosity and words of encouragement.
Ms Scallon said their support was “not just for me but also for the role and the democratic process itself”.