The administrative division of Novgorod Republic is not definitely known; the country was divided into several tysyachas (lit. thousands) and volosts. The city of Novgorod with its vicinity, as well as a few other towns were not part of any of those. Pskov achieved an autonomy from Novgorod in the 13th century; its independence was confirmed by the Treaty of Bolotovo in 1348. After the fall of the republic, Novgorod Land, as part of Russia, consisted of 5 pyatinas (literally "fifths") that were further divided into uyezds and pogosts. This division was replaced only in the beginning of 18th century when Peter I introduced guberniyas.
Northwestern Russia – the lands near Ilmen Lake, Volkhov River, Ladoga Lake and Gulf of Finland, often referred to as Novgorod volost in chronicles, formed the core of the state. The assumptions of the internal structure of independent Novgorod are mostly based on the list of the builders of the Great Bridge over Volkhov (1260s) and the 1471 treaty between Novgorod and Casimir IV of Poland. The former lists ten parts of Novgorod itself and nine other entities. According to Burov, these were tysyachas that, together with the capital made t'ma (lit. ten thousand), mentioned in the 1471 treaty. Below is the list of tysyachas and their approximate locations:
Novgorod with its vicinity (located on upper Volkhov and near Ilmen Lake) belonged to a separate territorial unit.
Other important towns were Porkhov, Koporye, Yama, Oreshek and Korela. Most of the towns were in the more economically developed western part of the country, in other parts only ryadki (small town-like settlements) existed or there were no town-like settlements at all.