Polk County, TN Elevation & Topographic Map
Elevation
4,220 ft 1,285 m3,340 ft 1,015 m2,890 ft 880 m2,010 ft 615 m1,130 ft 345 m690 ft 210 m
Contours every 500 ft, bold every 2,500 ft
USGS 3DEP · U.S. Census Bureau
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
Polk County averages about 1,380 ft (420 m) above sea level across all its land. Its ground runs from 690 ft on the northwest side to 4,220 ft on Big Frog Mountain.
Average elevation
1,380 ft 420 m
all land inside the county
Highest
4,220 ft 1,285 m
on Big Frog Mountain
Lowest
690 ft 210 m
on the northwest side
Polk County spans about 3,530 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.
| Figure | Elevation |
|---|---|
| Average of all land | 1,380 ft420 m |
| Highest point Inside the county, on Big Frog Mountain (3DEP terrain model; no NGS survey height) | 4,220 ft1,285 m |
| Lowest point Inside the county, on the northwest side | 690 ft210 m |
Elevation profile, west to east
23 mi west to east through Benton.
Topographic Map
- Location
- County in Tennessee, United States
- Population
- 18,338 2024 est.
- Land area
- 434.6 sq mi + 7.7 sq mi water
- Density
- 42 per sq mi
- Time zone
- Eastern UTC−5 / −4
- Landform regions
- Blue Ridge 72%, Valley and Ridge 28%
- Drains to
- Gulf of America
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Cherokee County, NC2,130 ft
- Fannin County, GA2,120 ft
- Monroe County1,460 ft
- Polk County1,380 ft
- Murray County, GA1,090 ft
- McMinn County910 ft
- Bradley County860 ft
Rankings by average elevation
- Counties in Tennessee23rd highest of 92
- Counties in the United States929th highest of 3,151
Peaks and hills highest inside
- Big Frog Mountain4,220 ft
- Chestnut Mountain, Polk County3,900 ft
- Chimneytop3,730 ft
- Little Frog Mountain3,320 ft
- Oswald Dome3,022 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.