McNairy County, TN Elevation & Topographic Map

Topographic elevation map of McNairy County, Tennessee, shaded from 370 ft on the west side to 680 ft on Mount Peter
Elevation
680 ft 210 m600 ft 185 m560 ft 170 m480 ft 150 m410 ft 125 m370 ft 110 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

McNairy County averages about 480 ft (145 m) above sea level across all its land. Its ground runs from 370 ft on the west side to 680 ft on Mount Peter.

Average elevation
480 ft 145 m
all land inside the county
Highest
680 ft 210 m
on Mount Peter
Lowest
370 ft 110 m
on the west side

McNairy County spans about 310 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 land480 ft145 m
Highest point
Inside the county, on Mount Peter (3DEP terrain model; no NGS survey height)
680 ft210 m
Lowest point
Inside the county, on the west side
370 ft110 m

Elevation profile, west to east

23 mi west to east through Selmer.

Topographic Map

Topographic elevation map of McNairy County, Tennessee, shaded from 370 ft on the west side to 680 ft on Mount Peter
County boundary (dashed) over shaded terrain, with contours every 20 ft (6 m).
Location
County in Tennessee, United States
Population
26,103 2024 est.
Land area
562.8 sq mi + 0.8 sq mi water
Density
46 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. Hardin County510 ft
  2. Alcorn County, MS490 ft
  3. McNairy County480 ft
  4. Chester County480 ft
  5. Hardeman County460 ft

Rankings by average elevation

Peaks and hills highest inside

  • Mount Peter680 ft
  • Martin Camp Hill650 ft
  • Bald Knob, McNairy County640 ft
  • Clover Hill600 ft
All 12 towns in McNairy County by typical elevation
  1. Guys510 ft
  2. Michie500 ft
  3. Eastview500 ft
  4. Finger500 ft
  5. Adamsville490 ft
  6. Bethel Springs490 ft
  7. Selmer490 ft
  8. Enville partly470 ft
  9. Stantonville470 ft
  10. Chewalla450 ft
  11. Ramer430 ft
  12. Milledgeville420 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; it is a named summit, so its height is the peak method: the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a survey mark sits within 160 ft (50 m) of it. 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.