Płock is a city in central Poland, on the Vistula river. It is in the Masovian Voivodeship, having previously been the capital of the Płock Voivodeship. According to the data provided by GUS on 31 December 2019 there were 119,425 inhabitants in the city. Its full ceremonial name, according to the preamble to the City Statute, is Stołeczne Książęce Miasto Płock. It is used in ceremonial documents as well as for preserving an old tradition.
Płock is a capital of the powiat in the west of the Masovian Voivodeship. From 1079 to 1138 it was the capital of Poland. The Wzgórze Tumskie with the Płock Castle and the Catholic Cathedral, which contains the sarcophagi of a number of Polish monarchs, is listed as a Historic Monument of Poland. It was the main city and administrative center of Mazovia in the Middle Ages before the rise of Warsaw as a major city of Poland, and later it remained a royal city of Poland. It is the cultural, academic, scientific, administrative and transportation center of the west and north Masovian region.