Colchester, CT Elevation & Topographic Map

Topographic elevation map of Colchester, Connecticut, shaded from 71 ft on the west side to 650 ft on the north side
Elevation
650 ft 200 m500 ft 155 m430 ft 130 m290 ft 90 m140 ft 45 m71 ft 22 m
Contours every 200 ft, bold every 1,000 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.
Town area
Fades everything outside the official town boundaries (US Census).

Elevation Data

Colchester sits at about 470 ft (145 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
470 ft 145 m
most residents: 350–540 ft
Lowest
71 ft 22 m
on the west side
Highest
650 ft 200 m
on the north side
Average
440 ft 135 m
all land inside town boundaries

Colchester spans about 579 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.

FigureElevation
Typical
Where people live: half of residents higher, half lower
470 ft145 m
Highest point
Inside town boundaries, on the north side
650 ft200 m
Lowest point
Inside town boundaries, on the west side
71 ft22 m
Town center
USGS map point for Colchester
460 ft140 m
Average of all land440 ft135 m

Elevation profile, west to east

10 mi west to east through the town center.

Topographic Map

Topographic elevation map of Colchester, Connecticut, shaded from 71 ft on the west side to 650 ft on the north side
Town boundaries (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
Town in New London County, Connecticut, United States
Population
15,752 2024 est.
Land area
48.9 sq mi + 0.8 sq mi water
Density
322 per sq mi
Coordinates
41.5757° N, 72.3320° W
Time zone
Eastern UTC−5 / −4
Landform region
New England
Drains to
Long Island Sound
ZIP codes 1
06415
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Sources: U.S. Census Bureau, USGS

Nearby Places

Nearby towns by typical elevation

  1. Greene, RI500 ft
  2. Colchester470 ft
  3. Hopkinton, RI130 ft
  4. Hope Valley, RI120 ft
  5. Westerly, RI65 ft
  6. Ashaway, RI65 ft
  7. East Marion, NY31 ft
  8. Fishers Island, NY20 ft
  9. Watch Hill, RI14 ft
  10. Misquamicut, RI11 ft
  11. Orient, NY10 ft

Rankings by typical elevation

Peaks and hills nearest, by height

  • Mount Everett2,608 ft
  • Buckley Hill550 ft
  • Bull Hill, New London County540 ft
  • Halls Hill540 ft
  • Jeremiahs Back480 ft
How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the town boundaries, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
  • Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census town boundaries (TIGER, Jan 1 2026).
  • Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) 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).
  • 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 (FAA airport elevation, 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 (boundaries, 2020 blocks, 2024 population estimates, Gazetteer areas, ZIP code areas); BTS time zones; NOAA NGS survey heights. All public domain.