The Government passed the Civil Partnership Act in 2010 and the first ceremonies took place in spring 2011.
By the end of 2012, civil partnerships had been registered by 965 couples, in every county in Ireland.
Now that figure has rocketed to 3,000 up to June this year, according to the Gay and Lesbian Equality Network (GLEN).
"Civil Partnerships continue to be a great success for Ireland," said Brian Sheehan from GLEN.
"Lesbian and gay couples in every county in Ireland have celebrated their love and commitment to each other, warmly supported by their families, friends and neighbours."
There were 816 civil partnerships in total for lesbian and gay couples living in Dublin city and county. The research found that Dublin 8 is the most popular home town for couples in civil partnerships, followed by Dublin 7.
After Dublin, Co Kildare is the most popular in Leinster, with 45 couples from there having civil partnerships.
Minister for Justice Frances Fitzgerald has recently recognised marriages of lesbian and gay couples in England and Wales, who will automatically be treated as civil partners in Ireland.
Couples who live in Ireland who have married in England and Wales join the hundreds of other lesbian and gay couples who married or entered civil partnership abroad, whose relationships are automatically recognised in Ireland as civil partnerships.
Mr Sheehan said that although the figures are healthy, the next step is for Irish people to recognise same-sex marriage.
"We believe that the strong welcome for civil partnerships throughout the country shows that Ireland is ready for the next step to provide for civil marriage for lesbian and gay couples through a constitutional referendum," said Mr Sheehan.
"We very much welcome the government commitment to hold a referendum on equal access to civil marriage in 2015.
"We believe that a 'yes' vote will be carried that would provide access to civil marriage and full constitutional equality."
The statistics come after the Broadcasting Authority of Ireland (BAI) reprimanded RTE Radio One's Mooney show for breaking the rules by running a programme which supported same-sex marriage.
The BAI upheld the complaint of bias and said that Mooney should have provided balance to the programme.