Helena Valley Northwest, MT Elevation & Topographic Map
Elevation
4,780 ft 1,455 m4,520 ft 1,380 m4,390 ft 1,340 m4,130 ft 1,260 m3,870 ft 1,180 m3,740 ft 1,140 m
Contours every 100 ft, bold every 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
Helena Valley Northwest sits at about 3,870 ft (1,180 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
3,870 ft 1,180 m
most residents: 3,780–4,120 ft
Lowest
3,740 ft 1,140 m
on the southeast side
Highest
4,780 ft 1,455 m
on the west side
Average
4,070 ft 1,240 m
all land inside the CDP boundary
Helena Valley Northwest spans about 1,040 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.
| Figure | Elevation |
|---|---|
| Typical Where people live: half of residents higher, half lower | 3,870 ft1,180 m |
| Highest point Inside the CDP boundary, on the west side | 4,780 ft1,455 m |
| Lowest point Inside the CDP boundary, on the southeast side | 3,740 ft1,140 m |
| Airport (HLN) FAA airport elevation, the highest point of its runways, 6.8 mi south of the CDP boundary | 3,877 ft1,182 m |
| Average of all land | 4,070 ft1,240 m |
| Nearest peak Baldy Mountain, Lewis and Clark County, 5.4 mi northwest of the CDP boundary (NGS survey) | 6,132 ft1,869 m |
Elevation profile, west to east
5.1 mi west to east through the middle of Helena Valley Northwest.
Altitude Effects
What 3,870 ft means day to day, worked out from the typical elevation.
Water boils at
204.8 °F96.0 °C
vs 212 °F at sea level; USDA: food takes longer to cook.
Air pressure
87% of sea level
26.0 inHg (87.9 kPa): each breath holds 13% less air.
Oxygen equivalent
18.2% at sea level
Air is still 21% oxygen, just thinner. Normal at the coast: 20.9%.
Sunburn
+8% more UV
EPA: UV rises about 2% for every 1,000 ft.
Topographic Map
- Location
- Unincorporated community (census-designated place) in Lewis and Clark County, Montana, United States
- Population
- 4,705 2020 Census
- Land area
- 16.4 sq mi
- Density
- 287 per sq mi
- Coordinates
- 46.7276° N, 112.0336° W
- Time zone
- Mountain UTC−7 / −6
- Landform region
- Northern Rocky Mountains
- Drains to
- Missouri River → Mississippi River → Gulf of America
- Airport
- Helena Regional (HLN) 3,877 ft
- ZIP codes 1
- 59602
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Marysville5,440 ft
- Unionville5,010 ft
- South Hills4,500 ft
- Canyon Creek4,300 ft
- Helena4,050 ft
- Helena West Side4,010 ft
- East Helena3,880 ft
- Helena Valley Northwest3,870 ft
- Helena Valley Southeast3,800 ft
- Helena Valley West Central3,770 ft
- Helena Valley Northeast3,740 ft
Rankings by typical elevation
- Towns in Montana187th highest of 497
- Towns in Lewis and Clark County13th highest of 18
Peaks and hills nearest, by height
- Moors Mountain7,981 ft
- Hogback Mountain, Lewis and Clark County7,810 ft
- Greenhorn Mountain7,500 ft
- Beartooth Mountain6,795 ft
- Baldy Mountain, Lewis and Clark County6,132 ft
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).
- 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, 3,740 ft at 46.7060° N, 112.0385° W, is in such a hollow or patch and is not counted.
- 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.
- Helena Valley Northwest 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); FAA airport data; BTS time zones; NOAA NGS survey heights. All public domain.