The district of Prague 9 was established by the Act no. 418/1990 Coll., on the capital of Prague, being effective since November 24, 1990 and confirmed by public ordinance of the capital of Prague no. 55/2000 Coll. HMP (Statute of the capital of Prague) that has been effective since July 1, 2001. The district of Prague 9 consists of original historic sections: greater part of Vysočany (except for the Balkán), smaller part of Libeň (east of the railway line Prague --Turnov), Prosek, a greater part of Střížkov, nearly the whole territory of Hrdlořezy, a smaller part of Hloubětín (west of the streets Průmyslová and Kbelská) and a slight part of Malešice. On December 31, 2014 the district of Prague 9 had the population of 55 569 inhabitants.
The aforementioned city quarters were originally agricultural settlements. Thanks to favourable location on the main railway lines, industrial production quickly broke through into Vysočany and Libeň in the 19th century. At the beginning of 20th century, other quarters gradually turned into residential areas with houses; in the second half of 20th century, great housing estate, designed for nearly 30 thousand people, was built in Prosek. In the 90’s of the last century, industry in Libeň and Vysočany disappeared; and nowadays, large housing estates are built there mainly while urban greenery is created responsibly.
The district of Prague 9 is adjacent to the districts of Prague 10, Prague 3, Prague 8, Prague 18 (Letňany), Prague 19 (Kbely) and Prague 14 (Kyje).