Montgomery County is a district of Virginia.
Boundaries: United States Census Bureau, MAF/TIGER Database (https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html) via geoBoundaries, public domain
Nothing has been written about Montgomery County here, and neither Wikipedia nor Wikivoyage has an article we could draw one from. If you know the place, that makes you a better source than anything we have. Tell us what is worth knowing and where you got it.
We show Christiansburg as the capital of Montgomery County. If that is wrong, tell us what it should be and where you read it.
Sign in to send a correction for Montgomery County, so a moderator can follow up with you.