Gem County, ID Elevation & Topographic Map
Elevation
7,950 ft 2,425 m6,520 ft 1,990 m5,810 ft 1,770 m4,380 ft 1,335 m2,950 ft 900 m2,240 ft 680 m
Zoom in for contour lines
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
Gem County averages about 3,570 ft (1,090 m) above sea level across all its land. Its ground runs from 2,240 ft on the southwest side to 7,950 ft on the northeast side.
Average elevation
3,570 ft 1,090 m
all land inside the county
Highest
7,950 ft 2,425 m
on the northeast side
Lowest
2,240 ft 680 m
on the southwest side
Gem County spans about 5,710 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 | 3,570 ft1,090 m |
| Highest point Inside the county, on the northeast side | 7,950 ft2,425 m |
| Lowest point Inside the county, on the southwest side | 2,240 ft680 m |
Elevation profile, west to east
22 mi west to east through Emmett.
Topographic Map
- Location
- County in Idaho, United States
- Population
- 21,857 2024 est.
- Land area
- 559.8 sq mi + 4.8 sq mi water
- Density
- 39 per sq mi
- Time zone
- Mountain UTC−7 / −6
- Landform region
- Columbia Plateau 95%
- Drains to
- Pacific Ocean
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Valley County6,510 ft
- Boise County5,520 ft
- Adams County4,790 ft
- Washington County3,720 ft
- Gem County3,570 ft
- Ada County3,050 ft
- Payette County2,590 ft
- Canyon County2,480 ft
Rankings by average elevation
- Counties in Idaho35th highest of 44
- Counties in the United States304th highest of 3,151
Peaks and hills highest inside
- Wilson Peak, Gem County7,870 ft
- Gabes Peak7,650 ft
- Four Bit Summit6,190 ft
- Sehewoki’i Newenee’an Katete5,910 ft
- Tree Spring Mountain5,100 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. Lowest: the lowest land cell; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
- 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.