Montgomery County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 28,114. Its county seat is Mount Sterling. With regard to the sale of alcohol, it is classified as a moist county—a county in which alcohol sales are prohibited, but containing a "wet" city where package alcohol sales are allowed, in this case Mount Sterling. Montgomery County is part of the Mount Sterling, KY Micropolitan Statistical Area, which is also included in the Lexington-Fayette–Richmond–Frankfort, KY combined statistical area.

Mount Sterling, often written as Mt. Sterling, is a home rule-class city in Montgomery County, Kentucky, United States. The population was 7,558 as of the 2020 census, up from 6,895 in 2010. It is the county seat of Montgomery County and the principal city of the Mount Sterling micropolitan area.