St. Mary's, CO Elevation & Topographic Map
Elevation
10,920 ft 3,330 m10,580 ft 3,225 m10,410 ft 3,175 m10,070 ft 3,070 m9,730 ft 2,965 m9,560 ft 2,915 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
St. Mary's sits at about 10,220 ft (3,115 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
10,220 ft 3,115 m
most residents: 10,040–10,530 ft
Lowest
9,560 ft 2,915 m
on the south side
Highest
10,920 ft 3,330 m
at the foot of the Indian Peaks
Average
10,190 ft 3,105 m
all land inside the CDP boundary
St. Mary's spans about 1,360 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 | 10,220 ft3,115 m |
| Highest point Inside the CDP boundary, at the foot of the Indian Peaks | 10,920 ft3,330 m |
| Lowest point Inside the CDP boundary, on the south side | 9,560 ft2,915 m |
| Average of all land | 10,190 ft3,105 m |
| Nearest peak Parry Peak, 3.1 mi west of the CDP boundary | 13,350 ft4,070 m |
Elevation profile, south to north
1.1 mi south to north through the middle of St. Mary's.
Altitude Effects
What 10,220 ft means day to day, worked out from the typical elevation.
Water boils at
192.9 °F89.4 °C
vs 212 °F at sea level; USDA: food takes longer to cook.
Air pressure
68% of sea level
20.4 inHg (69.1 kPa): each breath holds 32% less air.
Oxygen equivalent
14.3% at sea level
Air is still 21% oxygen, just thinner. Normal at the coast: 20.9%.
Sunburn
+20% more UV
EPA: UV rises about 2% for every 1,000 ft.
CDC: about 1 in 4 visitors who sleep above 8,000 ft get altitude sickness. CDC Yellow Book
Topographic Map
- Location
- Unincorporated community (census-designated place) in Clear Creek County, Colorado, United States
- Population
- 333 2020 Census
- Land area
- 1.4 sq mi
- Density
- 232 per sq mi
- Coordinates
- 39.8187° N, 105.6490° W
- Time zone
- Mountain UTC−7 / −6
- Landform region
- Southern Rocky Mountains
- Drains to
- Clear Creek → South Platte River → Middle Channel Platte River → Platte River → Missouri River → Mississippi River → Gulf of America
- ZIP codes 1
- 80452
⤓ 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
- St. Mary's10,220 ft
- York Gulch9,270 ft
- Mill Creek Park9,250 ft
- Silver Plume9,150 ft
- Winter Park8,880 ft
- Central8,790 ft
- Black Hawk8,610 ft
- Empire8,600 ft
- Georgetown8,500 ft
- Downieville-Lawson-Dumont8,070 ft
- Idaho Springs7,570 ft
Rankings by typical elevation
- Towns in Colorado5th highest of 484
- Towns in Clear Creek Countyhighest of 14
Peaks and hills nearest, by height
- Bard Peak13,620 ft
- Pettingell Peak13,530 ft
- North Arapaho Peak13,490 ft
- Parry Peak13,350 ft
- Starr Peak10,510 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).
- 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.
- St. Mary's 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.