Big Sky, MT Elevation & Topographic Map

Topographic elevation map of Big Sky, Montana, shaded from 5,870 ft on the east side to 11,150 ft on Lone Mountain
Elevation
11,150 ft 3,400 m9,830 ft 3,000 m9,170 ft 2,795 m7,850 ft 2,395 m6,530 ft 1,990 m5,870 ft 1,790 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.
Area
Fades everything outside the official CDP boundary (US Census).

Elevation Data

Big Sky sits at about 6,450 ft (1,965 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
6,450 ft 1,965 m
most residents: 6,240–8,370 ft
Lowest
5,870 ft 1,790 m
on the east side
Highest
11,150 ft 3,400 m
on Lone Mountain
Average
7,810 ft 2,380 m
all land inside the CDP boundary

Big Sky spans about 5,280 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.

FigureElevation
Typical
Where people live: half of residents higher, half lower
6,450 ft1,965 m
Highest point
Inside the CDP boundary, on Lone Mountain
11,150 ft3,400 m
Lowest point
Inside the CDP boundary, on the east side
5,870 ft1,790 m
Town center
USGS map point for Big Sky
7,220 ft2,200 m
Average of all land7,810 ft2,380 m

Elevation profile, west to east

13 mi west to east through the town center.

Altitude Effects

What 6,450 ft means day to day, worked out from the typical elevation.

Water boils at
200.0 °F93.3 °C

vs 212 °F at sea level; USDA: food takes longer to cook.

Air pressure
79% of sea level

23.6 inHg (79.8 kPa): each breath holds 21% less air.

Oxygen equivalent
16.5% at sea level

Air is still 21% oxygen, just thinner. Normal at the coast: 20.9%.

Sunburn
+13% more UV

EPA: UV rises about 2% for every 1,000 ft.

Topographic Map

Topographic elevation map of Big Sky, Montana, shaded from 5,870 ft on the east side to 11,150 ft on Lone Mountain
CDP boundary (dashed) over shaded terrain, with contours every 500 ft (152 m).
Location
Unincorporated community (census-designated place) in Gallatin and Madison counties, Montana, United States
Population
3,591 2020 Census
Land area
120.0 sq mi + 0.2 sq mi water
Density
30 per sq mi
Coordinates
45.2847° N, 111.3683° W
Time zone
Mountain UTC−7 / −6
Landform region
Northern Rocky Mountains
Drains to
Gallatin River → Missouri River → Mississippi River → Gulf of America
ZIP codes 2
59716 59730
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Sources: U.S. Census Bureau, USGS

Nearby Places

How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the CDP boundary, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
  • Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census CDP boundary (TIGER, Jan 1 2026).
  • Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) 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).
  • Altitude effects: standard-atmosphere formulas applied to the typical elevation; UV from EPA's rule of thumb (about 2% per 1,000 ft).
  • 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 (FAA airport elevation, 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.
  • Big Sky is an unincorporated community; figures cover the census-designated place, a statistical area.
  • Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (boundaries, 2020 blocks, Gazetteer areas, ZIP code areas); BTS time zones. All public domain.