Connecticut Elevation & Topographic Map

Topographic elevation map of Connecticut, shaded from sea level on East Branch to 2,380 ft on the northwest side
Elevation
2,380 ft 725 m1,780 ft 545 m1,490 ft 455 m890 ft 270 m300 ft 90 m0 ft 0 m
Zoom in for contour lines
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.
State area
Fades everything outside the official state boundary (US Census).

Elevation Data

Connecticut averages about 470 ft (140 m) above sea level across all its land. Its ground runs from sea level on East Branch to 2,380 ft on the northwest side.

Average elevation
470 ft 140 m
all land in Connecticut
Highest
2,380 ft 725 m
on the northwest side
Lowest
0 ft 0 m
at sea level on East Branch

Connecticut spans about 2,380 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 land470 ft140 m
Highest point
In Connecticut, on the northwest side
2,380 ft725 m
Lowest point
Where the land meets East Branch
0 ft0 m

Elevation profile, south to north

70 mi south to north through Bridgeport.

Topographic Map

Topographic elevation map of Connecticut, shaded from sea level on East Branch to 2,380 ft on the northwest side
State boundary (dashed) over shaded terrain, with contours every 200 ft (61 m).
Location
State in the New England division of the Northeast region, United States
Population
3,675,069 2024 est.
Land area
4,842.5 sq mi + 701.2 sq mi water
Density
759 per sq mi
Historical counties
8
Time zone
Eastern UTC−5 / −4
Landform region
New England
Drains to
Long Island Sound
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring states sharing a border, by average

  1. New York1,130 ft
  2. Massachusetts550 ft
  3. Connecticut470 ft
  4. Rhode Island250 ft

Rankings by average elevation

  • States in the United States42nd highest of 52

Peaks and hills highest inside

  • Bear Mountain, Litchfield County2,320 ft
  • Gridley Mountain2,220 ft
  • Bald Peak2,006 ft
  • Bradford Mountain1,960 ft
  • Thorpe Mountain1,790 ft
All 8 historical counties by average elevation
  1. Litchfield County920 ft
  2. Tolland County580 ft
  3. Windham County470 ft
  4. Fairfield County380 ft
  5. Hartford County320 ft
  6. New Haven County310 ft
  7. Middlesex County280 ft
  8. New London County250 ft
All 5 tribal lands by average elevation
  1. Schaghticoke (state) Reservation880 ft
  2. Golden Hill Paugussett (state) Reservation530 ft
  3. Paucatuck Eastern Pequot (state) Reservation250 ft
  4. Mashantucket Pequot Reservation180 ft
  5. Mohegan Reservation120 ft
How we measure
  • Average: every USGS 3DEP bare-earth cell of land inside the Census state boundary (TIGER/Line, Jan 1 2026), weighted equally, on a 2 arc-second (≈200 ft, 62 m) grid, coarsened from 1 arc-second so the whole area fits one run. Land means the boundary minus Census area water (on this grid, water areas of at least half a cell).
  • Highest and lowest: the highest land cell, re-read at 1 arc-second around the 25 highest grid cells. Lowest: the lowest land cell, re-read at 1 arc-second around the 25 lowest grid cells; 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, −9 ft at 41.0526° N, 73.5349° W, is in such a hollow or patch and is not counted; this coastal land's lowest point is sea level on the coast.
  • Nearby Places: neighboring states 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 state 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).
  • Historical counties: each one's average on its own grid (1 arc-second, coarser for the largest), the same figure its own page shows.
  • 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.