Bulgaria Postal Codes Postal Codes of Bulgaria: / Stara Zagora / Veliko Turnovo () / Sofija (stolica) / Blagoevgrad / Burgas / Dobrich / Gabrovo / Jambol / Khaskovo / Kjustendil / Kurdzhali / Lovech / Montana / Pazardzhik / Pernik / Pleven / Plovdiv / Razgrad / Ruse / Shumen / Silistra / Sliven / Smoljan / Sofija / Turgovishhe / Varna / Vidin / Vraca About Bulgaria Capital: Sofia Currency: Lev (BGN) Languages: Bulgarian (official) 76.8%, Turkish 8.2%, Roma 3.8%, other 0.7%, unspecified 10.5% (2011 est.) Population: 7,148,785 Area: 110,910 KM2