A staggering 13 counties now have an incidence rate higher than 200, while figures in Cavan have soared to 735.1 per 100,000.
The 14-day data for Cavan is now three times the national average.
Donegal and Monaghan, who are currently under a Level Four lockdown with Cavan, also saw major jumps, as did Meath, Clare and Sligo.
Cork, Galway, Leitrim, Limerick, Westmeath, Kildare and Wexford are also above 200 per 100,000 population.
Meanwhile, Tipperary's IR is the lowest in Ireland at 88.4
The national incidence rate is now at 217.9 after 1,000 new cases were recorded on Friday.
The National Public Health Emergency Team has now advised Government to place the country under a Level Five lockdown for six weeks.
A decision is expected in the next day or so, with the Cabinet Covid-19 Sub Committee meeting today to discuss the latest recommendation from NPHET.
As always, the final decision lies with Cabinet.
Speaking as at least 1,000 cases were recorded for the third day in a row, Chief Medical Officer Dr Tony Holohan said: "Case numbers are continuing to rise. Right now, we need everyone to cut their social contacts to an absolute minimum.
"Every time you physically interact with another person, you are providing an opportunity for the virus to spread.”
See the incidence rate and number of cases in each county for the last 14-days in the table below:
Tragically, three further deaths were also announced on Friday.
To date, there have been 47,427 confirmed cases in Ireland, with a total of 1,841 deaths.
