Union County, NC Elevation & Topographic Map

Topographic elevation map of Union County, North Carolina, shaded from 280 ft on the northeast side to 790 ft on the northwest side
Elevation
790 ft 240 m660 ft 200 m600 ft 180 m470 ft 145 m340 ft 105 m280 ft 85 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

Union County averages about 570 ft (175 m) above sea level across all its land. Its ground runs from 280 ft on the northeast side to 790 ft on the northwest side.

Average elevation
570 ft 175 m
all land inside the county
Highest
790 ft 240 m
on the northwest side
Lowest
280 ft 85 m
on the northeast side

Union County spans about 510 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 land570 ft175 m
Highest point
Inside the county, on the northwest side
790 ft240 m
Lowest point
Inside the county, on the northeast side
280 ft85 m

Elevation profile, west to east

24 mi west to east through Indian Trail.

Topographic Map

Topographic elevation map of Union County, North Carolina, shaded from 280 ft on the northeast side to 790 ft on the northwest side
County boundary (dashed) over shaded terrain, with contours every 40 ft (12 m).
Location
County in North Carolina, United States
Population
263,386 2024 est.
Land area
632.7 sq mi + 6.9 sq mi water
Density
416 per sq mi
Time zone
Eastern UTC−5 / −4
Landform region
Piedmont
Drains to
Atlantic Ocean
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Sources: U.S. Census Bureau, USGS

Nearby Places

Neighboring counties sharing a border, by average

  1. Mecklenburg County700 ft
  2. Cabarrus County650 ft
  3. Union County570 ft
  4. Lancaster County, SC520 ft
  5. Stanly County520 ft
  6. Anson County340 ft
  7. Chesterfield County, SC320 ft

Rankings by average elevation

Peaks and hills highest inside

  • Red Hill, Union County710 ft
  • Polk Mountain660 ft
All 16 towns in Union County by typical elevation
  1. Mint Hill partly720 ft
  2. Stallings680 ft
  3. Weddington670 ft
  4. Lake Park650 ft
  5. Indian Trail640 ft
  6. Hemby Bridge630 ft
  7. Mineral Springs620 ft
  8. Marvin610 ft
  9. Monroe610 ft
  10. Wesley Chapel600 ft
  11. Unionville570 ft
  12. Waxhaw570 ft
  13. Wingate570 ft
  14. Marshville550 ft
  15. JAARS540 ft
  16. Fairview530 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.