The latest statistics from last year's Census show that the number of separated and divorced people increased by 22.3% between 2006 and 2011, from 166,797 to 203,964.
More women than men were divorced or separated.
There were 88,918 separated and divorced men in 2011, but there were 115,046 women.
Between 1996 and 2011, the figures show that the number of people who were re-married following divorce or annulment was 42,960, which was a rise of 550%.
The statistics also showed that at the age of 32 more women in Ireland are married than single.
The report shows 19,225 women were single and 19,466 were married.
More men aged 34 were married than single, according to the report, with 17,378 single and 18,941 married.
There were 1,179,210 families in the State on Census night, an increase of 12% on 2006.
Men in opposite sex couples were on average 2.21 years older than their wives or partners.
The number of lone-parent families was 215,315 in 2011, of which the majority (186,284) were mothers. There were 29,031 lone fathers.
The majority (124,785) had just one child.
The Census also shows that lone parents are less likely to be at work, with 42.5% of lone parents working.
There were 439,478 adults aged 18 and over who were living with their parents at the time of the Census. Of these, three fifths were men.
There were 4,042 same sex couples living together in 2011, of which 2,321 (57.4%) were men and 1,721 (42.6%) were women.
The majority (83%) lived in urban areas.
Overall, men are more likely to re-marry than women, with 39% of ever-divorced men re-married compared with only 28% of women.
There were 392,000 people living on their own at the time of the last Census. Almost half (194,000) were men and just over half (198,000) were women.
The majority of those living alone were single 56.3%. Just over 65% of these were men, 46.9% were women. Just less than one in four were widowed.