Kostromskoy Uyezd

Kostroma (, ) is a historic city and the administrative center of Kostroma Oblast, Russia. A part of the Golden Ring of Russian cities, it is located at the confluence of the rivers Volga and Kostroma. In the 2021 census, the population is 267,481.

Sudislavl () is an urban locality (an urban-type settlement) and the administrative center of Sudislavsky District of Kostroma Oblast, Russia, situated from Kostroma and northeast of Moscow. Population:

Krasnoye-na-Volge () is an urban locality (an urban-type settlement) in Krasnoselsky District of Kostroma Oblast, Russia. Population: