Grayson County, TX Elevation & Topographic Map

Topographic elevation map of Grayson County, Texas, shaded from 480 ft on the east side to 930 ft on the northeast side
Elevation
930 ft 285 m820 ft 250 m760 ft 230 m650 ft 200 m540 ft 165 m480 ft 145 m
Contours every 500 ft, bold every 2,500 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.
County area
Fades everything outside the official county boundary (US Census).

Elevation Data

Grayson County averages about 720 ft (220 m) above sea level across all its land. Its ground runs from 480 ft on the east side to 930 ft on the northeast side.

Average elevation
720 ft 220 m
all land inside the county
Highest
930 ft 285 m
on the northeast side
Lowest
480 ft 145 m
on the east side

Grayson County spans about 450 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 land720 ft220 m
Highest point
Inside the county, on the northeast side
930 ft285 m
Lowest point
Inside the county, on the east side
480 ft145 m

Elevation profile, west to east

32 mi west to east through Sherman.

Topographic Map

Topographic elevation map of Grayson County, Texas, shaded from 480 ft on the east side to 930 ft on the northeast side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in Texas, United States
Population
150,532 2024 est.
Land area
932.8 sq mi + 46.4 sq mi water
Density
161 per sq mi
Time zone
Central UTC−6 / −5
Landform region
Coastal Plain 99%
Drains to
Gulf of America
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Cooke County840 ft
  2. Love County, OK800 ft
  3. Marshall County, OK760 ft
  4. Grayson County720 ft
  5. Denton County650 ft
  6. Collin County630 ft
  7. Bryan County, OK610 ft
  8. Fannin County600 ft

Rankings by average elevation

  • Counties in Texas141st highest of 254
  • Counties in the United States1,997th highest of 3,151

Peaks and hills highest inside

  • Brushy Mound, Grayson County860 ft
All 18 towns in Grayson County by typical elevation
  1. Dorchester860 ft
  2. Howe840 ft
  3. Knollwood830 ft
  4. Tom Bean800 ft
  5. Southmayd800 ft
  6. Whitesboro790 ft
  7. Van Alstyne780 ft
  8. Whitewright760 ft
  9. Gunter760 ft
  10. Pottsboro750 ft
  11. Sherman750 ft
  12. Collinsville740 ft
  13. Denison730 ft
  14. Sadler720 ft
  15. Bells700 ft
  16. Sherwood Shores680 ft
  17. Preston670 ft
  18. Tioga670 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.
  • 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.