Grand Isle County, VT Elevation & Topographic Map

Topographic elevation map of Grand Isle County, Vermont, shaded from 96 ft on the north side to 280 ft on the south side
Elevation
280 ft 85 m230 ft 70 m210 ft 65 m160 ft 50 m120 ft 35 m96 ft 29 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

Grand Isle County averages about 140 ft (40 m) above sea level across all its land. Its ground runs from 96 ft on the north side to 280 ft on the south side.

Average elevation
140 ft 40 m
all land inside the county
Highest
280 ft 85 m
on the south side
Lowest
96 ft 29 m
on the north side

Grand Isle County spans about 184 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.

FigureElevation
Average of all land140 ft40 m
Highest point
Inside the county, on the south side
280 ft85 m
Lowest point
Inside the county, on the north side
96 ft29 m

Elevation profile, south to north

30 mi south to north through Alburgh.

Topographic Map

Topographic elevation map of Grand Isle County, Vermont, shaded from 96 ft on the north side to 280 ft on the south side
County boundary (dashed) over shaded terrain, with contours every 200 ft (61 m).
Location
County in Vermont, United States
Population
7,528 2024 est.
Land area
81.8 sq mi + 111.6 sq mi water
Density
92 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
St. Lawrence Valley 98%
Drains to
Canada
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Clinton County, NY970 ft
  2. Chittenden County760 ft
  3. Franklin County690 ft
  4. Grand Isle County140 ft

Rankings by average elevation

Peaks and hills highest inside

  • The Head253 ft
  • Stanhope Hill170 ft
All 6 towns in Grand Isle County by typical elevation
  1. Grand Isle170 ft
  2. South Hero160 ft
  3. Village of Alburgh120 ft
  4. Alburgh120 ft
  5. Isle La Motte120 ft
  6. North Hero110 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. Lowest: the lowest land cell; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
  • Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, 19 ft at 44.8604° N, 73.2696° W, is in such a hollow or patch and is not counted.
  • 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.