Any downgrading of Drogheda Corporation under the new local government reforms will be met "forcefully", according to the corporation's deputy mayor, Cllr Frank Godfrey (Independent).
In Sligo local politicians have also complained about the proposed changes in legislation which would classify Sligo as a town rather than a borough.
Cllr Godfrey, who is also a member of Louth County Council, has called for the council to support the corporation being retained and not losing its borough status.
The Local Government Bill would see all corporations replaced by town councils.
Some politicians are also concerned that they would lose the power they have at corporation level to influence service charges.
Under the new Bill these charges would be decided at county council level. Another provision could see the corporations losing their mayors.
"The mayoralty will possibly be taken away as well, and I think the mayors in Kilkenny, Wexford, Limerick and Drogheda should fight this together," he told yesterday's monthly meeting of the county council.
The Mayor of Drogheda, Cllr Sean Collins, said he believed the Bill could still provide for a mayor to be elected and he had raised the matter with the Minister for the Environment, Mr Dempsey.
The council members debated the Bill yesterday and gave it a general welcome.
In response to concerns that there were not enough officials to implement some of the provisions, the county manager, Mr John Quinliven, said he was proud of the staff, but it was under strength at the moment.
"We are understaffed, and I would give anything to see a man assigned to each village in the area on a full-time basis. We have six planners now and we should have about 10," he told them.
The proposed changes which would classify Sligo as a town rather than a borough have caused consternation among local politicians.
If passed, the new Bill would officially recognise Sligo Corporation as a town council, in the same category as the urban district councils and the town commissions.
"There might be a war going on in Kilkenny over city status, but it will be nothing compared to what will happen in Sligo," warned Mr John Perry, the Fine Gael TD, yesterday.
Mr Perry is leading a campaign to have the decision reversed and has called on all the county's elected representatives to unite to retain borough status.
The Ballymote TD described the proposal as a gratuitous insult to the people of Sligo.
"There is massive opposition to the plan here. There's no question about it. We will make sure that this proposal will be reversed," Mr Perry said.
The change in status would completely undermine all efforts to have Sligo designated as one of the State's eight growth centres and would reduce Sligo's standing in the eyes of investors.