Poczta Polska is the state-owned enterprise managing the national numeric PNA system across Poland's sixteen voivodeships. Introduced in 1973, the system uses a hyphenated five-digit format that provides a robust framework for mail sorting in a country with a complex urban and rural mix. This data-driven infrastructure is essential for supporting Poland's position as a major logistics hub in Central Europe.
The Polish Kod Pocztowy (or PNA - Pocztowy Numer Adresowy) consists of five digits in a \"NN-NNN\" format. The first digit identifies the postal district (region), the second the sub-district, and the last three digits specify the post office or delivery zone.
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