Kladno is a city in the Central Bohemian Region of the Czech Republic. It has about 69,000 inhabitants. It is the largest city in the region and h…Kladno is a city in the Central Bohemian Region of the Czech Republic. It has about 69,000 inhabitants. It is the largest city in the region and has a rich industrial history. Kladno is formed by six administrative parts: Kladno, Dubí, Kročehlavy, Rozdělov, Švermov and Vrapice.