You said you'll work on cities, so here is my contribution for Turkey: top 10 cities in the controlled territory (with 2007 pop estimates in millions).
Istanbul's Asian side (5.6)
Ankara (4.1)
Izmir (2.9)
Bursa (1.7)
Baku (1.6)
Yerevan (1.5)
Adana (1.4)
Tblisi (1.2)
Mersin (1.1)
Gaziantep (1.1)
And religious breakdown would be 66% Sunni, 25% Shia, 9% Orthodox when the caucasus territories are included and Thrace excluded.
edit:religious breakdown for Greece (assuming current populations, which may have changed in ww3) - 55% Orthodox, 43% Sunni, 2% Shia
I'll reserve further comments until I see history and all stats (especially the ww3 bit), as how can Greece ever defeat Turkey is beyond me.