Poland Postal Codes Postal Codes of Poland:Greater PolandKujawsko PomorskieLesser PolandLodz VoivodeshipLower SilesiaLublinLubuszMazoviaOpole VoivodeshipPodlasiePomeraniaSilesiaSubcarpathiaSwietokrzyskieWarmia MasuriaWest Pomerania About Poland Capital: Warsaw Currency: Zloty (PLN Languages: Polish (official) 96.2%, Polish and non-Polish 2%, non-Polish 0.5%, unspecified 1.3% Population: 38,500,000 Area: 312,685 KM2