Kostopil (Ukrainian: Косто́піль, Polish: Kostopol) is a small city, originally named Ostlec Wielki or Ostaltsi, on the Zamchysko river in Rivne Oblast of western Ukraine (historical ...
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Volhynia). It was the administrative center of the Kostopil Raion up to 2020, but is now within the Rivne Raion. Population: 31,060 (2021 est.).
- Latitude50.883335113525
- Longitude26.443056106567