Director of Celtic Rugby David Jordan said: "the improvement in Magners League attendances is spread across the board with every Celtic Union seeing an increase in their like for like average gates.
"We are now at the halfway point in the season and have seen crowds increase substantially; 289,732 fans had come through the gates by the mid point last year compared to 385,399 this season, which represents a 33% increase in overall attendances.
"The growth in our attendances can be attributed to a number of notable factors: the opening of new improved grounds with increased capacities - Thomond Park Stadium alone can hold 25,000 fans; the innovative marketing that the Scottish teams have undertaken seeing attendances increase by over 50%; Leinster, already the Magners League's Best Supported Team, continuing to attract an ever growing support with their average gate increasing by 11.5% and the continuing success of the Welsh Regions enjoying capacity sell outs over the holidays raising the average Welsh gates by 8.1%.
"Congratulations must go the backroom and commercial staff as well as the players for producing the exciting brand of rugby that fans want to come and see, and thanks of course our loyal fans for their continuing support.
"With the situation in the Magners League tight at the top of the table, only seven points separating the top 7 teams and Ospreys due to play Munster in the next round then it can only get closer, which will hopefully lead into a very exciting finish that should ensure our attendance gains will continue through to the end of the season."