The figures were included in Eurostat population estimates for all 27 EU countries in the period 2010-2060.
Based on the forecasts, the percentage of the population over 80 will increase from 4.6 percent in 2010 to 13.3 percent in 2060.
Similarly, the population of the EU is expected to rise from 501 million in 2010 to 525 million in 2035 and then fall to 517 million in 2060.
The biggest population decline forecast by Eurostat is in Germany, whose population is expected to shrink from 81.7 million in 2010 to just 66.3 million in 2060 (-18.8 percent) while that of France is seen rising from 64.7 million in 2010 to 73.2 million in 2060.
The highest population increase within the EU is forecast in Ireland (46 percent), followed by Luxembourg (45 percent) and Cyprus (41.3 percent). The Cypriot population is seen rising from 803,000 in 2010 to 1.1 million in 2060, while the percentage of those over 80 will rise from 2.9 percent in 2010 to 9.2 percent in 2060.