Alleghany, CA Elevation & Topographic Map

Topographic elevation map of Alleghany, California, shaded from 3,680 ft on the south side to 4,520 ft on the north edge, below higher ground just outside
Elevation
4,520 ft 1,375 m4,310 ft 1,315 m4,200 ft 1,280 m4,000 ft 1,220 m3,790 ft 1,155 m3,680 ft 1,120 m
Contours every 40 ft, bold every 200 ft
USGS 3DEP · U.S. Census Bureau
⤓ Download this map
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

Alleghany sits at about 4,240 ft (1,290 m) above sea level, the median height of all land inside the CDP boundary (too few residents to weight by).

Typical elevation (all land)
4,240 ft 1,290 m
few residents
Lowest
3,680 ft 1,120 m
on the south side
Highest
4,520 ft 1,375 m
on the north edge, below higher ground just outside
Average
4,190 ft 1,275 m
all land inside the CDP boundary

Alleghany spans about 840 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 (all land)
Median of all land; too few residents to weight by
4,240 ft1,290 m
Highest point
Inside the CDP boundary, on the north edge, below higher ground just outside
4,520 ft1,375 m
Lowest point
Inside the CDP boundary, on the south side
3,680 ft1,120 m
Town center
USGS map point for Alleghany
4,430 ft1,350 m
Average of all land4,190 ft1,275 m

Elevation profile, south to north

0.7 mi south to north through the town center.

Altitude Effects

What 4,240 ft means day to day, worked out from the typical elevation.

Water boils at
204.1 °F95.6 °C

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

Air pressure
86% of sea level

25.6 inHg (86.7 kPa): each breath holds 14% less air.

Oxygen equivalent
17.9% 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

Topographic elevation map of Alleghany, California, shaded from 3,680 ft on the south side to 4,520 ft on the north edge, below higher ground just outside
CDP boundary (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
Unincorporated community (census-designated place) in Sierra County, California, United States
Population
30 2020 Census
Land area
0.3 sq mi
Density
86 per sq mi
Coordinates
39.4696° N, 120.8433° W
Time zone
Pacific UTC−8 / −7
Landform region
Cascade-sierra Mountains
Drains to
Yuba River → Sacramento River → Pacific Ocean
ZIP codes 1
95910
⤓ Download this map

WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.

Sources: U.S. Census Bureau, USGS

Nearby Places

Nearby towns by typical elevation

  1. Graniteville5,010 ft
  2. La Porte4,990 ft
  3. Sierra City4,280 ft
  4. Alleghany4,240 ft
  5. Pike3,290 ft
  6. Downieville2,980 ft
  7. Goodyears Bar2,850 ft
  8. Camptonville2,810 ft
  9. Washington2,700 ft
  10. Nevada City2,600 ft
  11. North San Juan2,180 ft

Rankings by typical elevation

Peaks and hills nearest, by height

  • Mount Lola9,147 ft
  • Sierra Buttes8,520 ft
  • Haskell Peak8,090 ft
  • Snow Mountain, Placer County8,010 ft
  • Mount Fillmore7,710 ft
How we measure
  • Typical elevation: the median height of all land inside the CDP boundary; too few residents live here to weight by people.
  • 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.
  • Alleghany 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; NOAA NGS survey heights. All public domain.