Loudon County, TN Elevation & Topographic Map
Elevation
1,310 ft 400 m1,170 ft 355 m1,100 ft 335 m950 ft 290 m810 ft 245 m740 ft 225 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
Loudon County averages about 930 ft (280 m) above sea level across all its land. Its ground runs from 740 ft on the west side to 1,310 ft on Alexander Knob.
Average elevation
930 ft 280 m
all land inside the county
Highest
1,310 ft 400 m
on Alexander Knob
Lowest
740 ft 225 m
on the west side
Loudon County spans about 570 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 | 930 ft280 m |
| Highest point Inside the county, on Alexander Knob (3DEP terrain model; no NGS survey height) | 1,310 ft400 m |
| Lowest point Inside the county, on the west side | 740 ft225 m |
Elevation profile, south to north
18 mi south to north through Lenoir City.
Topographic Map
- Location
- County in Tennessee, United States
- Population
- 62,129 2024 est.
- Land area
- 229.3 sq mi + 18.1 sq mi water
- Density
- 271 per sq mi
- Time zone
- Eastern UTC−5 / −4
- Landform region
- Valley and Ridge
- Drains to
- Gulf of America
⤓ Download this map
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Monroe County1,460 ft
- Blount County1,420 ft
- Knox County1,010 ft
- Roane County930 ft
- Loudon County930 ft
- McMinn County910 ft
Rankings by average elevation
- Counties in Tennessee42nd highest of 92
- Counties in the United States1,544th highest of 3,151
Peaks and hills highest inside
- Alexander Knob1,310 ft
- Lotterdale Knob1,230 ft
- Little Mountain, Loudon County1,220 ft
- Terry Knob1,210 ft
- High Top, Loudon County1,110 ft
All 6 towns in Loudon County by typical elevation
- Lenoir City920 ft
- Tellico Village880 ft
- Greenback870 ft
- Philadelphia870 ft
- Rarity Bay partly870 ft
- Loudon840 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, 720 ft at 35.7107° N, 84.1971° 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.