Rorari Caeli has pointed out recently released statistics for the availability of the Traditional Latin Mass across the World (except Ireland, for some reason) as of February 2010. The raw statistics and methodology are available here (in French).
A few headlines are that:
The United States has 289 episcopally authorized every Sunday Latin Mass sites out of a total of 359 (approved + SSPX) with a total Catholic population of 64.6 million. That is 1 episcopally authorised every Sunday Latin Mass site per 223,000 Catholics.
Switzerland has 21 episcopally authorized every Sunday Latin Mass sites out of a total of 45 (approved + SSPX) with a Catholic population of 3.2 million. That is 1 episcopally authorised every Sunday Latin Mass site per 152,000 Catholics.
Britain has 37 episcopally authorized every Sunday Latin Mass sites out of a total of 53 (approved + SSPX) with a total Catholic population of 4.8 million. That is 1 episcopally authorised every Sunday Latin Mass site per 129,000 Catholics.
Germany has 49 episcopally authorized every Sunday Latin Mass sites out of a total of 88 (approved + SSPX) with a Catholic population of 26,297,000. That is 1 episcopally authorised every Sunday Latin Mass site per 537,000 Catholics.
Austria has 11 episcopally authorized every Sunday Latin Mass sites out of a total of 19 (approved + SSPX) with a Catholic population of 5,755,000. That is 1 episcopally authorised every Sunday Latin Mass site per 523,000 Catholics.
Canada has 23 episcopally authorized every Sunday Latin Mass sites out of a total of 39 (approved + SSPX) with a Catholic population of 13 million. That is 1 episcopally authorised every Sunday Latin Mass site per 568,000 Catholics.
Australia has 17 episcopally authorized every Sunday Latin Mass sites out of a total of 28 (approved + SSPX) with a Catholic population of 5,239,000. That is 1 episcopally authorised every Sunday Latin Mass site per 308,000 Catholics.
New Zealand has 6 episcopally authorized every Sunday Latin Mass sites out of a total of 10 (approved + SSPX) with a Catholic population of 459,000. That is 1 episcopally authorised every Sunday Latin Mass per 79,000 Catholics.
Population figures are as in the Pontifical Year Book for 2005.
Ireland had a Catholic population of 4.2 million according to the same statistics. Ireland has 6 episcopally authorised every Sunday Latin Mass sites out of a total of 11 (approved + SSPX). That is 1 episcopally authorised every Sunday Latin Mass site per 694,000 Catholics.
Holy Patrons of Ireland, pray for us!