Blacksburg, VA is located in Montgomery County. It is an incorporated town in Montgomery County, Virginia, with a population of around 44,826 as of the 2020 census. Blacksburg is also known for being the home of Virginia Tech, a major university in the area. The county seat of Montgomery County is Christiansburg, and the county is part of the New River Valley region of Virginia. So, to answer your question: Blacksburg is in Montgomery County, Virginia.
