Montgomery County, Virginia
Quick answer: Montgomery County is a county in Virginia with its seat at Christiansburg. Its estimated population in 2025 was 98,434, down 1.3% since 2020. It covers about 387 square miles of land.
| Type | county |
|---|---|
| County seat | Christiansburg |
| Established | 1772 |
| Population, 2025 estimate | 98,434 |
| Population, 2020 estimate | 99,593 |
| Change 2020–2025 | -1.2% |
| Rank by population in Virginia | 21 of 133 |
Overview
Montgomery County is a county in the Commonwealth of Virginia, one of 95 in the state.[1] The county seat is Christiansburg.[2] The county was established in 1772.[2] The name comes from Richard Montgomery.[2]
Population of Montgomery County
The U.S. Census Bureau estimated the population of Montgomery County at 98,434 in July 2025, down 1.3% from the April 2020 base of 99,722.[1] That made it 21st of Virginia's 133 counties and independent cities by population. It ranked 105th for growth since 2020.[1]
From 2020 to 2025 the Census Bureau counted about 3,506 births and 3,908 deaths, so deaths outnumbered births by 402.[1] More people moved away to other parts of the United States than moved in. Net domestic migration was -4,011. Moves from abroad added 3,113.[1]
Geography
Montgomery County covers 386.8 square miles of land and 2.4 square miles of water.[3] By land area it ranks 48th of 133 in Virginia.[3] It had about 254 people per square mile in 2025, so it is a mix of towns and countryside. Its geographic center lies near 37.18° N, 80.39° W.[3]
The county borders Craig County, Floyd County, Giles County, Pulaski County, the City of Radford and Roanoke County.[4]
The U.S. Geological Survey place-name database lists 63 named streams, 22 named summits, 4 lakes and reservoirs, 1 gap and 1 waterfall, including Big Falls in the county.[5]
Towns
Montgomery County has 2 incorporated towns. With their estimated 2025 populations, they are: Blacksburg (45,104), Christiansburg (22,442).[6] In Virginia, towns remain part of the county around them, unlike independent cities.
Frequently asked questions
What is the county seat of Montgomery County?
Christiansburg.
What is the population of Montgomery County?
About 98,434 people in 2025, according to the U.S. Census Bureau.
How big is Montgomery County?
About 387 square miles of land, plus 2.4 square miles of water.
References
- [1] U.S. Census Bureau, County Population Totals and Components of Change: 2020-2025 (Vintage 2025) – last checked 11/08/2026
- [2] Wikidata, Montgomery County, Virginia (open data, CC0) – last checked 11/08/2026
- [3] U.S. Census Bureau, 2024 Gazetteer Files: Counties – last checked 11/08/2026
- [4] U.S. Census Bureau, County Adjacency File (2024) – last checked 11/08/2026
- [5] U.S. Geological Survey, Geographic Names Information System (GNIS), Domestic Names – last checked 11/08/2026
- [6] U.S. Census Bureau, City and Town Population Totals: 2020-2025 – last checked 11/08/2026
Official website: www.montva.com
Boundary on the map: Census TIGERweb. See all counties and cities on the map.