Suffolk County, MA Elevation & Topographic Map
Elevation
330 ft 100 m250 ft 75 m210 ft 65 m120 ft 40 m41 ft 13 m0 ft 0 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
Suffolk County averages about 58 ft (18 m) above sea level across all its land. Its ground runs from sea level on Boston Harbor to 330 ft on Bellevue Hill.
Average elevation
58 ft 18 m
all land inside the county
Highest
330 ft 100 m
on Bellevue Hill
Lowest
0 ft 0 m
at sea level on Boston Harbor
Suffolk County spans about 330 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 Bellevue Hill (3DEP terrain model; no NGS survey height) | 330 ft100 m |
| Lowest point Where the land meets Boston Harbor | 0 ft0 m |
Elevation profile, south to north
8.2 mi south to north through Boston.
Topographic Map
- Location
- County in Massachusetts, United States
- Population
- 793,144 2024 est.
- Land area
- 58.3 sq mi + 62.0 sq mi water
- Density
- 13,614 per sq mi
- Time zone
- Eastern UTC−5 / −4
- Landform region
- New England 93%
- 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
- Middlesex County230 ft
- Norfolk County190 ft
- Essex County89 ft
- Plymouth County80 ft
- Suffolk County58 ft
Rankings by average elevation
- Counties in Massachusetts12th highest of 13
- Counties in the United States3,006th highest of 3,151
Peaks and hills highest inside
- Bellevue Hill330 ft
- Green Hill, Suffolk County300 ft
- Monterey Hill260 ft
- Peaked Hill, Suffolk County260 ft
- Brush Hill, Suffolk County250 ft
All 4 towns in Suffolk County by typical elevation
- Boston43 ft
- Chelsea28 ft
- Revere25 ft
- Winthrop Town19 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.
- 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, −250 ft at 42.2685° N, 71.1579° 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 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.