Zhytomyr in the context of Zhytomyr urban hromada

Zhytomyr Oblast (Ukrainian: Житомирська область, romanized: Zhytomyrska oblast), also referred to as Zhytomyrshchyna (Ukrainian: Житомирщина), is an oblast (province) in northwestern Ukraine. The administrative center of the oblast is the city of Zhytomyr. Its population is approximately 1,179,032 (2022 estimate).

The Teteriv (Ukrainian: Тетерiв) is a right tributary of the Dnieper River in Ukraine. It has a length of 365 kilometres (227 mi) and a drainage basin of 15,300 square kilometres (5,900 sq mi).

The Teteriv flows generally in northeastern direction through geographic regions of Podolian Upland, Dnieper Upland, and Polesia. The river starts near a populated place of Nosivky (previously Nosivka) near administrative border with Vinnytsia Oblast at 299 m (981 ft) over the sea level. Flowing through Podolian Upland in some areas it has characteristics of mountainous stream. In the underflow the valley of the Teteriv in Polissia on up to 4 kilometres (2.5 mi), the width of the river widens up to 40-90 meter, before it flows into the Dnieper. The midstream of Teteriv from Zhytomyr to Radomyshl has predominantly rocky banks. Few kilometers east of Radomyshl turns into fully flatland river within Kyiv Oblast. Further east of Ivankiv turns into a swampy wetland. The river drains into the Dnieper in the Kyiv Reservoir just south of the Prypiat river estuary and the Chernobyl exclusion zone.