Jefferson County, NY Elevation & Topographic Map

Topographic elevation map of Jefferson County, New York, shaded from 240 ft on the northwest side to 1,740 ft on the southeast side
Elevation
1,740 ft 530 m1,360 ft 415 m1,180 ft 360 m800 ft 245 m430 ft 130 m240 ft 75 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.
County area
Fades everything outside the official county boundary (US Census).

Elevation Data

Jefferson County averages about 550 ft (165 m) above sea level across all its land. Its ground runs from 240 ft on the northwest side to 1,740 ft on the southeast side.

Average elevation
550 ft 165 m
all land inside the county
Highest
1,740 ft 530 m
on the southeast side
Lowest
240 ft 75 m
on the northwest side

Jefferson County spans about 1,500 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 land550 ft165 m
Highest point
Inside the county, on the southeast side
1,740 ft530 m
Lowest point
Inside the county, on the northwest side
240 ft75 m

Elevation profile, south to north

48 mi south to north through Le Ray.

Topographic Map

Topographic elevation map of Jefferson County, New York, shaded from 240 ft on the northwest side to 1,740 ft on the southeast side
County boundary (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
County in New York, United States
Population
113,140 2024 est.
Land area
1,267.9 sq mi + 588.6 sq mi water
Density
89 per sq mi
Time zone
Eastern UTC−5 / −4
Landform regions
Central Lowland 72%, Adirondack 15%, Appalachian Plateaus 11%
Drains to
Great Lakes 67%, Canada 33%
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Lewis County1,300 ft
  2. St. Lawrence County810 ft
  3. Cayuga County800 ft
  4. Oswego County580 ft
  5. Jefferson County550 ft

Rankings by average elevation

Peaks and hills highest inside

  • Underwood Hill, Jefferson County1,140 ft
  • Orvis Hill1,100 ft
  • Dry Hill, Jefferson County980 ft
  • Mount Quillen879 ft
  • Barr Hill860 ft
All 60 towns in Jefferson County by typical elevation
  1. Worth1,320 ft
  2. Lorraine870 ft
  3. Rodman850 ft
  4. Natural Bridge810 ft
  5. West Carthage790 ft
  6. Champion780 ft
  7. Wilna740 ft
  8. Carthage740 ft
  9. Great Bend690 ft
  10. Herrings680 ft
  11. Rutland670 ft
  12. Deferiet660 ft
  13. Adams Center640 ft
  14. Village of Adams630 ft
  15. Adams630 ft
  16. Pierrepont Manor630 ft
  17. Felts Mills620 ft
  18. Mannsville600 ft
  19. Black River590 ft
  20. Fort Drum560 ft
  21. Le Ray540 ft
  22. Town of Watertown530 ft
  23. Village of Antwerp530 ft
  24. Calcium520 ft
  25. Antwerp500 ft
  26. Village of Philadelphia490 ft
  27. Philadelphia490 ft
  28. Watertown480 ft
  29. Pamelia Center480 ft
  30. Belleville470 ft
  31. Ellisburg470 ft
  32. Pamelia460 ft
  33. Evans Mills430 ft
  34. Theresa410 ft
  35. Village of Theresa400 ft
  36. Plessis390 ft
  37. La Fargeville390 ft
  38. Depauville380 ft
  39. Orleans370 ft
  40. Glen Park370 ft
  41. Redwood370 ft
  42. Oxbow350 ft
  43. Village of Brownville340 ft
  44. Village of Ellisburg340 ft
  45. Brownville330 ft
  46. Henderson330 ft
  47. Clayton320 ft
  48. Dexter310 ft
  49. Alexandria300 ft
  50. Cape Vincent300 ft
  51. Hounsfield300 ft
  52. Sackets Harbor290 ft
  53. Chaumont280 ft
  54. Lyme270 ft
  55. Thousand Island Park270 ft
  56. Village of Cape Vincent270 ft
  57. Village of Clayton270 ft
  58. Alexandria Bay270 ft
  59. Three Mile Bay260 ft
  60. Fishers Landing260 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 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.
  • 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.