A client of mine just asked me to research current Facebook stats in Ireland and so I utilised the facebook page advertising tool to collect some basic information.
At the time of writing (30/11/2011), there are 2,060,740 facebook users.
53% of facebook users in Ireland are Female.
46% of the entire population (4,484,300 according to CSO) are on Facebook
I’ve also created a summary chart with Facebook’s age distribution spread in Ireland for anyone that wants to download, share or use these statistics in presentations 
| 13-17 | 275,620 | |
| 18-24 | 491,880 | |
| 25-34 | 628,220 | |
| 35-44 | 370,880 | |
| 45-54 | 172,780 | |
| 55-64 | 73,200 | |
| 64+ | 48,160 |