Middlesex County, MA Elevation & Topographic Map

Topographic elevation map of Middlesex County, Massachusetts, shaded from sea level on Boston Harbor to 1,590 ft on the northwest side
Elevation
1,590 ft 485 m1,190 ft 365 m990 ft 300 m600 ft 180 m200 ft 60 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

Middlesex County averages about 230 ft (70 m) above sea level across all its land. Its ground runs from sea level on Boston Harbor to 1,590 ft on the northwest side.

Average elevation
230 ft 70 m
all land inside the county
Highest
1,590 ft 485 m
on the northwest side
Lowest
0 ft 0 m
at sea level on Boston Harbor

Middlesex County spans about 1,590 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 land230 ft70 m
Highest point
Inside the county, on the northwest side
1,590 ft485 m
Lowest point
Where the land meets Boston Harbor
0 ft0 m

Elevation profile, west to east

27 mi west to east through Cambridge.

Topographic Map

Topographic elevation map of Middlesex County, Massachusetts, shaded from sea level on Boston Harbor to 1,590 ft on the northwest side
County boundary (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
County in Massachusetts, United States
Population
1,668,956 2024 est.
Land area
817.9 sq mi + 29.0 sq mi water
Density
2,041 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
New England
Drains to
Atlantic Ocean
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Sources: U.S. Census Bureau, USGS

Nearby Places

All 61 towns in Middlesex County by typical elevation
  1. Ashby870 ft
  2. Hopkinton400 ft
  3. Marlborough390 ft
  4. Townsend330 ft
  5. Devens partly290 ft
  6. Shirley280 ft
  7. Littleton Common280 ft
  8. Boxborough280 ft
  9. Groton270 ft
  10. Ayer270 ft
  11. Ashland260 ft
  12. Littleton260 ft
  13. Hudson250 ft
  14. Pepperell250 ft
  15. Holliston240 ft
  16. Stow230 ft
  17. Westford220 ft
  18. Acton220 ft
  19. Lexington220 ft
  20. Maynard210 ft
  21. East Pepperell210 ft
  22. Carlisle210 ft
  23. Dunstable210 ft
  24. Lincoln200 ft
  25. Weston190 ft
  26. Tyngsborough180 ft
  27. Sudbury180 ft
  28. Cochituate180 ft
  29. Sherborn180 ft
  30. Framingham180 ft
  31. Natick170 ft
  32. Wayland170 ft
  33. Hanscom AFB150 ft
  34. Stoneham150 ft
  35. Chelmsford150 ft
  36. Burlington150 ft
  37. Dracut150 ft
  38. Concord150 ft
  39. West Concord140 ft
  40. Billerica140 ft
  41. Bedford140 ft
  42. Pinehurst120 ft
  43. Lowell120 ft
  44. Newton120 ft
  45. Tewksbury120 ft
  46. Reading110 ft
  47. Woburn110 ft
  48. Arlington100 ft
  49. Wakefield99 ft
  50. North Reading98 ft
  51. Wilmington96 ft
  52. Waltham86 ft
  53. Melrose78 ft
  54. Belmont72 ft
  55. Winchester72 ft
  56. Everett53 ft
  57. Watertown51 ft
  58. Malden39 ft
  59. Somerville38 ft
  60. Medford22 ft
  61. Cambridge14 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, −44 ft at 42.5896° N, 71.1424° 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.