Almost 6,000 same-sex marriages have been celebrated in Ireland since the first such marriages took place in November 2015 up to the end of last year.
Statistics published by the Central Statistics Office ahead of the tenth anniversary of the passing of the marriage equality referendum in 2015 show that 5,956 such marriages were held between the passing of the vote and the end of 2024.
The CSO said the most same-sex marriages registered in one year so far was in 2016, the year immediately after the referendum was passed, when 1,056 such marriages were celebrated.
The second highest number registered in a year was in 2017 at 759.
All types of marriage ceremonies were affected by Covid-19 restrictions and in 2020, 314 same-sex marriages were registered.
The following year, 2021, saw the number of same-sex marriages increase to 500.
There have been more than 600 same-sex marriages celebrated in every other year up to the end of 2024.
Overall, same-sex marriages accounted for 3.3% of total marriages annually since 2016, according to the CSO.
Of the almost 5,956 same-sex marriages registered between November 2015 and the end of 2024, 3,178 involved male marriages and 2,778 were female marriages.
One county, Longford, saw no same sex-marriages registered in 2016 - the first year after the passing of the referendum - or in the last year of the CSO's figures, 2024.
In the intervening years, there have been five male same-sex marriages registered in Co Longford, but no female same sex-marriages were celebrated in the county up to the end of 2024.
Ireland was the first country in the world to introduce same-sex marriage by popular vote
Looking at the data by province, in 2016 and in 2024, the highest number of same-sex marriages took place in Leinster followed by Munster, Connacht, and Ulster.
In 2016, the average age of the older male groom was 43.8 years, which fell slightly to 43.7 years in 2024.
The average age of the younger male groom was 37.2 years in 2016, while in 2024, this had increased to 37.7 years.
The average age of the older bride in a same-sex marriage in 2016 was 43.3 years, which fell to 41.6 years in 2024.
The average age of the younger bride in 2016 was 38.8 years compared with an average of 37.8 years in 2024.
In 2016, 86 men aged over 60 years old were grooms in a same-sex marriage, while in 2024, 35 men in this age category got married.
In 2016, 43 women aged 60 and over tied the knot in a same-sex marriage, while in 2024, this figure was 39 years old.
On 22 May 2015, 1.2 million people, or just over 62%, voted in favour of amending the Constitution so that marriages, regardless of the sex of the partners, would be recognised.
Ireland became the first country in the world to introduce same-sex marriage by popular vote, with the first marriages taking place in November 2015.
The CSO's figures do not include same-sex marriages registered to date in 2025.