There was an increase in the number of people emigrating from Ireland, according to the latest Central Statistics Office figures.
In the 12 months to April of this year, the number of people leaving is estimated to have increased to 87,100 from 80,600 in the year to April 2011.
Irish nationals were the largest group accounting for 46,500 or 53%.
The number of immigrants is estimated to have fallen marginally to 52,700 from 53,300 over the same period.
These combined changes resulted in an increase in the net outward migration from 27,400 in the year to April 2011 to 34,400 in the year to April 2012, the CSO said.
Net outward migration for Irish nationals increased to 26,000 in the year to April 2012, from 22,400 in the previous year. The figure for non-Irish nationals also increased from 5,000 to 8,400 over the same period.
The number of births was 74,000 while the number of deaths was 29,200, resulting in natural growth for the year to April 2012 of 44,900, a fall of 2,600 on the previous years figure of 47,500.
The combined effect of natural increase and negative net migration resulted in an overall small increase in the population of 10,500 bringing the population estimate to 4.59 million in April 2012. The overall population increase of 0.2% was unevenly distributed across the regions, with the Mid-East showing the strongest growth at 1.2% and the Border showing the largest decrease of 0.9%.
The male population is estimated to have decreased by 900 in the year ending April 2012, the first such decrease since 1990. This fall is due to a decrease of 8,900 in non-Irish national males.
Trips to Ireland down 2% in months from June to August
New figures from the Central Statistices Office show that the total number of trips to Ireland fell by 2% in the three months from June to August.
The CSO figures show that a total of 2,122,800 trips were made here in the three month period, down 44,000 on the same time last year.
The CSO said that trips by UK residents fell by 6%, while the number of visitors from North America was down 2.8%. However, visits by people in the rest of Europe increased by 2.1% while visitors from other areas rose by 3.3%.
The figures also reveal that the total number of foreign trips made by Irish residents in the months from June to August increased by 1.5% to 2,075,300.