Here is some geographical ranking information based on TC visitor count in 2009:
Top Continents
1. Europe
2. Americas
3. Asia
4. Africa
5. Oceania
Note that Turkey and Russia are counted in Europe in these statistics
Top Countries
1. Turkey (19.39% of all visitors)
2. United States (17.25%)
3. United Kingdom (14.11%)
4. Egypt (2.51%)
5. Romania (2.16%)
6. Poland (2.13%)
7. Germany (1.96%)
8. Canada (1.94%)
9. Netherlands (1.86%)
10. Australia (1.73)
Top Cities
1. Istanbul (8.09% of all visitors, almost 40% of visitors from Turkey)
2. London (5.25%)
3. Ankara (2.27%)
4. Izmir (1.67%)
5. Cairo (1.65%)
6. Mugla (1.29%)
7. New York (1.20%)
8. Bucharest (1.06%)
9. Manchester (1.01%)
10. Riyadh (0.90%)
11. Antalya
12. Adana
13. Sydney
14. Bursa
15. Athens
16. Bangkok
17. San Pedro
18. Amman
19. Budapest
20. Sofia
Some interesting pieces of information about 2009 TC visitor profile:
- We had visitors from all countries in the world except for 6 African countries (Western Sahara, Guinea, Niger, Chad, Central African Republic, Congo)
- In terms of the average time visitors spent on the site country rankings are completely different. Starting from top it goes like this: Lesotho, Burundi, Singapore, Gibraltar, Afghanistan... In average time spent on the site Turkey is #21, US is #82, UK is #32, Egypt is #50, Romania is #22 and Poland is #27.
- Statistics show visitors from 11,714 different cities
However, am a bit disappointed that visitors from the Isle of Aenigma got no mention 
)