Dukes County, MA Elevation & Topographic Map
Elevation
300 ft 90 m220 ft 70 m190 ft 55 m110 ft 35 m34 ft 10 m−4 ft −1 m
Contours every 500 ft, bold every 2,500 ft
USGS 3DEP · U.S. Census Bureau
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
Dukes County averages about 58 ft (18 m) above sea level across all its land. Its ground runs from 4 ft below sea level on the east side to 300 ft on Peaked Hill.
Average elevation
58 ft 18 m
all land inside the county
Highest
300 ft 90 m
on Peaked Hill
Lowest
−4 ft −1 m
on the east side
Dukes County spans about 304 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 | 58 ft18 m |
| Highest point Inside the county, on Peaked Hill (3DEP terrain model; no NGS survey height) | 300 ft90 m |
| Lowest point Inside the county, on the east side | −4 ft−1 m |
Elevation profile, west to east
30 mi west to east through Oak Bluffs.
Topographic Map
- Location
- County in Massachusetts, United States
- Population
- 21,061 2024 est.
- Land area
- 103.2 sq mi + 387.8 sq mi water
- Density
- 204 per sq mi
- Time zone
- Eastern UTC−5 / −4
- Landform region
- Coastal Plain 83%
- Drains to
- Atlantic Ocean
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Bristol County99 ft
- Barnstable County58 ft
- Dukes County58 ft
- Nantucket County28 ft
Rankings by average elevation
- Counties in Massachusettslowest of 13
- Counties in the United States3,007th highest of 3,151
Peaks and hills highest inside
- Peaked Hill, Dukes County300 ft
- Prospect Hill, Dukes County300 ft
- Goat Rocks260 ft
- Whiting Hill240 ft
- Ridge Hill, Dukes County220 ft
All 8 towns in Dukes County by typical elevation
- Chilmark110 ft
- West Tisbury78 ft
- Aquinnah71 ft
- Tisbury71 ft
- Vineyard Haven65 ft
- Oak Bluffs40 ft
- Edgartown31 ft
- Gosnold29 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.