Among 250,000 immigrants, 216,000 (86%) were born in one of the former Yugoslav republics, most of them (108,000) in Bosnia and Herzegovina, followed by Croatia (45,000) and Serbia (25,000). Among the residents of Slovenia there are 171 foreign countries of birth.
Med temi so najštevilnejši tisti, katerih prvo prebivališče (po njihovem rojstvu) je bilo v Bosni in Hercegovini (108.000), sledijo po številu tisti, katerih prvo prebivališče je bilo na Hrvaškem (45.000), in nato tisti s prvim prebivališčem v Srbiji (25.000).