Kildare had by far the highest fatality level when adjusted for population.
New research about the Irish Civil War is said to have uncovered new information.
The Irish Civil War Fatalities Project shows the highest number of casualties occurred in Dublin, followed by Cork, Kerry and Tipperary.
Fatality levels adjusted for population reveals other aspects of the story.
Kildare had by far the highest fatality level when adjusted for population.
Its garrison status contributed to its relatively high death tally.
The study also shows a much higher number of National Army, or Pro-Treaty troops, lost their lives than the Anti-Treaty IRA.
Historian and Research Assistant John Dorney says the research greatly enhances our understanding of the period.
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