Ostrogozhsky Uyezd

town and administrative center of Rossoshansky District of Voronezh Oblast in central Russia

Ostrogozhsk () is a town and the administrative center of Ostrogozhsky District in Voronezh Oblast, Russia, located on the Tikhaya Sosna River (a tributary of the Don), south of Voronezh, the administrative center of the oblast. As of the 2021 Census, its population was 32,520.

village in Rossoshansky District, Russia

Kostomarovo () is a rural locality (a selo) in Yudinskoye Rural Settlement, Podgorensky District, Voronezh Oblast, Russia. In the 19th century the village was part of Sagunovskaya volost, Ostrogozhsky Uyezd, Voronezh Governorate. The population was 263 as of 2010. There are 4 streets.