Knox County, TN Elevation & Topographic Map
Elevation
2,110 ft 645 m1,780 ft 545 m1,620 ft 495 m1,290 ft 390 m960 ft 290 m790 ft 240 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
Knox County averages about 1,010 ft (310 m) above sea level across all its land. Its ground runs from 790 ft on the west side to 2,111 ft on House Mountain.
Average elevation
1,010 ft 310 m
all land inside the county
Highest
2,111 ft 644 m
on House Mountain
Lowest
790 ft 240 m
on the west side
Knox County spans about 1,320 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 | 1,010 ft310 m |
| Highest point Inside the county, on House Mountain (NGS survey height) | 2,111 ft644 m |
| Lowest point Inside the county, on the west side | 790 ft240 m |
Elevation profile, south to north
21 mi south to north through Knoxville.
Topographic Map
- Location
- County in Tennessee, United States
- Population
- 506,748 2024 est.
- Land area
- 508.4 sq mi + 17.5 sq mi water
- Density
- 997 per sq mi
- Time zone
- Eastern UTC−5 / −4
- Landform region
- Valley and Ridge
- Drains to
- Gulf of America 96%
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Sevier County1,980 ft
- Blount County1,420 ft
- Anderson County1,310 ft
- Grainger County1,300 ft
- Union County1,260 ft
- Jefferson County1,170 ft
- Knox County1,010 ft
- Roane County930 ft
- Loudon County930 ft
Rankings by average elevation
- Counties in Tennessee38th highest of 92
- Counties in the United States1,376th highest of 3,151
Peaks and hills highest inside
- House Mountain, Knox County2,111 ft
- Brushy Knob1,550 ft
- Mitchell Knob, Knox County1,530 ft
- Potter Knob, Knox County1,420 ft
- Hightop1,410 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.
- 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, 620 ft at 35.8918° N, 84.2387° 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.