Foreign nationals accounted for more than 10% of the population in Ireland on census night last year, according to the latest Census figures examining the ethnicity of the population.
More than a quarter of all black people living in Ireland were born here. The statistics reveal around 35% of the black or black-Irish community is aged under 10, compared to the national average of 14.1%
One-third of the black community is Catholic, while a further one in six is Muslim.
Louth has the highest proportion of people with black or black-Irish ethnicity at 2.2% compared to the national average of 1.1%.
The census figures reveal that Travellers account for 0.5% of the population.
The average age of Travellers is well below the national average - just 18 years compared to a general average of 33 years.
Two-in-five Travellers were aged under 15 in 2006 compared to the national average of one-in-five.
But Travellers aged over 65 accounted for just 2.6% of their community, compared to the average of 11% in the general population.
Of towns with a population of over 5,000, Tuam has the highest proportion of Travellers at 7.7%, followed by Longford (4.6%), Birr (4%) and Ballinasloe (3%).
The Census also reveals that the Asian population in Ireland has risen to 52,345. Almost 60% of those live in Dublin. 26% of Asians said they were Catholic, while 22% were Muslim.
There were 419,733 non-Irish people surveyed out of a population of 4,172,013.
The highest proportion of non-Irish nationals came from the UK at 112,548, with the next highest being the Polish community with 63,276 and 46,952 people describing themselves as Asian, with people from Africa accounting for 35,326.
