Originally Budapest had 10 districts after coming into existence upon the unification of the three cities in 1873. Since 1950, Greater Budapest has been divided into 22 boroughs (and 23 since 1994). At that time there were changes both in the order of districts and in their sizes. The city now consists of 23 districts, 6 in Buda, 16 in Pest and 1 on Csepel Island between them.