Alleghany County, VA Elevation & Topographic Map

Elevation

4,050 ft 1,235 m3,290 ft 1,000 m2,910 ft 885 m2,140 ft 655 m1,380 ft 420 m1,000 ft 305 m

Contours every 500 ft, bold every 2,500 ft

USGS 3DEP · U.S. Census Bureau

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How to use this mapviews, tools and data

Elevation: Ground colored by height from green (lowest) to white (highest), with contour lines every 40–500 ft (USGS data).
Satellite: A 2016 satellite photo at 33 ft (10 m) detail; contours off.
3D: Tilt and turn the terrain; hills are raised 1.5×, or set ×1 for true height.
Click or tap anywhere: The exact elevation of that spot in ft and m.
Measure: Pick two points for the climb, descent and grade along a straight line.
County area: Fades everything outside the official county boundary (US Census).

Elevation Data

Alleghany County averages about 2,050 ft (625 m) above sea level across all its land. Its ground runs from 990 ft on the east side to 4,050 ft on Big Knob.

Average elevation

2,050 ft 625 m

all land inside the county

Highest

4,050 ft 1,235 m

on Big Knob

Lowest

990 ft 305 m

on the east side

Alleghany County spans about 3,060 ft of height, so no single spot tells the whole story. The ruler shows where most of its land lies, and where the other numbers you'll see come from.

Figure	Elevation
Average of all land	2,050 ft625 m
Highest point Inside the county, on Big Knob (3DEP terrain model; no NGS survey height)	4,050 ft1,235 m
Lowest point Inside the county, on the east side	990 ft305 m

Elevation profile, west to east

31 mi west to east through Clifton Forge.

Topographic Map

Location: County in Virginia, United States
Population: 14,632 2024 est.
Land area: 446.6 sq mi + 3.2 sq mi water
Density: 33 per sq mi
Time zone: Eastern UTC−5 / −4
Landform region: Valley and Ridge
Drains to: Atlantic Ocean

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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

Greenbrier County, WV2,630 ft
Monroe County, WV2,310 ft
Bath County2,220 ft
Craig County2,190 ft
Alleghany County2,050 ft
Rockbridge County1,620 ft
Botetourt County1,510 ft
Covington city1,370 ft

Rankings by average elevation

Counties in Virginia16th highest of 94
Counties in the United States606th highest of 3,151

Peaks and hills highest inside

Big Knob4,050 ft
Bald Knob, Alleghany County3,870 ft
Brushy Mountain3,560 ft
Oliver Mountain3,560 ft
Lick Mountain2,920 ft

All 7 towns in Alleghany County by typical elevation

Callaghan1,420 ft
Mallow1,220 ft
Clifton Forge1,210 ft
Selma1,210 ft
Low Moor1,180 ft
Cliftondale Park1,090 ft
Iron Gate1,030 ft

How we measure

Average: every USGS 3DEP bare-earth cell of land inside the Census county boundary (TIGER/Line, Jan 1 2026), weighted equally, on a 1 arc-second (≈100 ft, 30 m) grid. Land means the boundary minus Census area water.
Highest and lowest: the highest land cell; it is a named summit, so its height is the peak method: the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a survey mark sits within 160 ft (50 m) of it. Lowest: the lowest land cell; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
Nearby Places: neighboring counties and rankings use each one's average elevation, on its own grid, the same figure its page shows. Peaks and hills: the highest summits inside the county with at least 980 ft (300 m) of prominence, then the highest federal (GNIS) summits inside it when there are fewer than 5; each is the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a usable survey mark sits within 160 ft (50 m) of it (shown as published).
Towns: each town's typical elevation (population-weighted median of its own 2020 blocks at 1 arc-second); a town is listed when any of its 2020 residents live in the county.
Rounding: computed heights are rounded to 10 ft (5 m), or to 1 ft (1 m) under 100 ft; 3DEP is good to about a meter, not a foot. Published figures (NGS survey heights) are shown as their publisher gives them.
Datum: North American Vertical Datum of 1988 (NAVD 88). NGS plans to replace NAVD 88 with a new datum (NAPGD2022); heights will then shift slightly.
Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (TIGER boundaries and water, 2020 blocks, 2024 population estimates, county adjacency); NOAA NGS survey heights; BTS time zones. All public domain.