A report from the Central Statistics Office has predicted that the population of Dublin could increase by 31.9% by 2036.
The number of people living in Dublin could rise from 1.34 million in 2016 to 1.76 million by 2036 under one scenario examined by the CSO statisticians.
This would mean that 31.6% of the country's total population would be living in Dublin by 2036.
The CSO said the country's overall population, which stood at 4.74 million in 2016, is projected to increase to between 5.33 million and 5.81 million by 2036.
Today's CSO report presents six regional population projections for each year from 2017 to 2036, with the six scenarios looking at fertility, mortality, internal migration and international migration.
The Mid-East region of the country, which accounted for 14.6% of the total population share in 2016, is projected to increase under all six scenarios to between 15.1% and 16.6% by 2036.
But the South-West, Mid-West, West and Border regions are projected to account for a lower percentage share of the total population under all scenarios by 2036.
The CSO has also forecast that the number of people aged 65 years and over is projected to see increases in excess of 65% across all regions by 2036.
"This publication is not an attempt to predict the future but rather presents how the population could evolve under six different scenarios," said CSO Statistician James Hegarty.
"By making assumptions about future trends in mortality, fertility, internal and international migration we can project the population forward and examine the possible outcomes for demographic groups such as the school-going population, the working-age population and the elderly," he added.
