Poland's current voivodeships (provinces) are largely based on the country's historic regions, whereas those of the past two decades (to 1998) had been centred on and named for individual cities. The new units range in area from less than 10,000 square kilometres (3,900 sq mi) for Opole Voivodeship to more than 35,000 square kilometres (14,000 sq mi) for Masovian Voivodeship. Administrative authority at voivodeship level is shared between a government-appointed voivode (governor), an elected regional assembly (sejmik) and an executive elected by that assembly.
The voivodeships are subdivided into powiats (often referred to in English as counties), and these are further divided into gminas (also known as communes or municipalities). Major cities normally have the status of both gmina and powiat. Poland has 16 voivodeships, 379 powiats (including 65 cities with powiat status), and 2,478 gminas.