Воронежская губерния
The town served as the headquarters of a Sloboda Ukrainian Cossack territorial and military regiment until the 1760s when it was abolished by Catherine II. In 1765 the city Ostrogozhsk was incorporated into newly established the Sloboda Ukraine Governorate. In 1802 the city of Ostrogozhsk ended up in the new Voronezh Governorate and same year it was granted the town rights. Since then the city became a center of the split East Sloboda Ukraine.