Buncrana has the highest rates of Covid-19 in the country while Carndonagh is close behind in third place.
A detailed breakdown of coronavirus cases in each Local Electoral Authority (LEA) shows that, as of last Monday, 28 June, Buncrana had a 14-day incidence rate of 608.1 per 100,000.
This compares to a national incidence rate of 107 per 100,000.
RTE News is also reporting that Dungarvan in County Waterford had the second highest incidence of Covid, with 600.1 cases per 100,000.
Another Donegal town, Carndonagh, had the third highest rate of infection at 489.3.
Yesterday, 512 new cases of Covid-19 were confirmed to the Department of Health, 63 of theses were in Donegal.
This is a 25% rise on the 380 infections reported this day last week (24 June) and a 38% rise on the 313 cases notified two weeks ago (17 June).
It is also the highest daily number of Covid cases in over a month, since 529 new cases were recorded on 4 June.
The Deputy Chief Medical Officer, Dr Ronan Glynn, said the national 14-day incidence rate was now 107 per 100,000. This compares to 98.7 on 28 June.
In a post on Twitter, he said that of the 512 new cases, 216 are in Dublin; 63 in Donegal; 26 in Meath; 21 in Kildare and 20 in Limerick.
It comes after Dr Cillian De Gascun said the Delta variant is likely to represent all the cases of Covid-19 in Ireland within two to three weeks.
The director of the National Virus Reference Laboratory told RTÉ’s Today with Claire Byrne that preliminary data shows Delta now accounts for 70% of the cases here.
The number of people with the disease in ICU is unchanged since Thursday at 14. In total, there are 46 people in hospital with coronavirus.
Earlier yesterday, the Minister for Health, Stephen Donnelly, announced an expansion of the vaccination roll-out programme to younger people.
It will see the 18-34 age group being able to ‘opt in’ for Janssen or AstraZeneca for earlier vaccination.
Also yesterday, the Government revealed it will buy one million Covid-19 vaccine doses from Romania, in what is seen as a major boost to the vaccination programme.
Taoiseach Micheál Martin held talks with the Romanian President Klaus Iohannis this morning, and it was agreed in principle to purchase one million Pfizer and Moderna vaccines – which are expected to arrive here as soon as possible.
Meanwhile the HSE National Director for the vaccine roll-out has urged people to be “patient” with pharmacies with regard to booking vaccine appointments, and pharmacies ability to offer vaccines.