Česká pošta operates the national postal network of the Czech Republic, using a five-digit numeric system known as PSČ. This system, inherited from the Czechoslovak era, remains a robust framework for organizing the country's 14 regions (kraje). The precise distribution of these codes supports the high-density industrial and residential clusters that characterize the Czech landscape.
The Czech PSČ (Poštovní směrovací číslo) consists of five digits, usually written with a space between the third and fourth digits (NNN NN). The first digit represents the postal region, while the second indicates the transport hub.
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