Longford had the highest rate of imprisonment in Ireland last year - followed by Limerick, Dublin and Louth.
161 people were jailed in Longford, per 100,000 population.
Donegal was the most law-abiding county, per capita, with rate of just 34.
Former governor of Mountjoy Prison, John Lonergan, says some areas like Louth and Limerick linked to gangland crime have high rates.
In terms of Louth in particular, over the last four or five years,in it has attracted a lot of public attention in relation to the gangland feuds up there and someof the savagery that has been commited.
The same , I think it's fair to say would be true of Limerick over the years as well, so it's not surprising at all that drugland feuds and gangs, and murders in particular, brings about a higher level of policing and inevitably higher levels of convictions.