Dallas County, TX Elevation & Topographic Map

Topographic elevation map of Dallas County, Texas, shaded from 340 ft on the southeast side to 880 ft on the southwest side
Elevation
880 ft 265 m740 ft 225 m670 ft 205 m540 ft 165 m400 ft 125 m340 ft 100 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

Dallas County averages about 520 ft (155 m) above sea level across all its land. Its ground runs from 340 ft on the southeast side to 880 ft on the southwest side.

Average elevation
520 ft 155 m
all land inside the county
Highest
880 ft 265 m
on the southwest side
Lowest
340 ft 100 m
on the southeast side

Dallas County spans about 540 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 land520 ft155 m
Highest point
Inside the county, on the southwest side
880 ft265 m
Lowest point
Inside the county, on the southeast side
340 ft100 m

Elevation profile, south to north

30 mi south to north through Dallas.

Topographic Map

Topographic elevation map of Dallas County, Texas, shaded from 340 ft on the southeast side to 880 ft on the southwest side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in Texas, United States
Population
2,656,028 2024 est.
Land area
873.1 sq mi + 35.5 sq mi water
Density
3,042 per sq mi
Time zone
Central UTC−6 / −5
Landform region
Coastal Plain
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. Tarrant County660 ft
  2. Denton County650 ft
  3. Collin County630 ft
  4. Ellis County540 ft
  5. Rockwall County530 ft
  6. Dallas County520 ft
  7. Kaufman County430 ft

Rankings by average elevation

  • Counties in Texas158th highest of 254
  • Counties in the United States2,305th highest of 3,151

Peaks and hills highest inside

  • Inspiration Point, Dallas County860 ft
  • Chalk Hill, Dallas County660 ft
All 31 towns in Dallas County by typical elevation
  1. Cedar Hill770 ft
  2. Duncanville710 ft
  3. Ovilla partly690 ft
  4. Glenn Heights660 ft
  5. DeSoto650 ft
  6. Cockrell Hill640 ft
  7. Richardson620 ft
  8. Addison620 ft
  9. Lancaster580 ft
  10. University Park570 ft
  11. Bear Creek Ranch560 ft
  12. Garland540 ft
  13. Dallas540 ft
  14. Lewisville partly530 ft
  15. Wylie partly530 ft
  16. Highland Park530 ft
  17. Sachse530 ft
  18. Grand Prairie520 ft
  19. Carrollton partly520 ft
  20. Farmers Branch510 ft
  21. Mesquite500 ft
  22. Irving490 ft
  23. Balch Springs490 ft
  24. Sunnyvale490 ft
  25. Hutchins490 ft
  26. Rowlett480 ft
  27. Coppell470 ft
  28. Ferris partly470 ft
  29. Wilmer460 ft
  30. Seagoville430 ft
  31. Combine partly380 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, 310 ft at 32.5532° N, 96.5871° W, is in such a hollow or patch and is not counted.
  • 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.