Boundary County, ID Elevation & Topographic Map
Elevation
7,710 ft 2,350 m6,220 ft 1,895 m5,480 ft 1,670 m3,980 ft 1,215 m2,490 ft 760 m1,750 ft 530 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.
- County area
- Fades everything outside the official county boundary (US Census).
Elevation Data
Boundary County averages about 4,060 ft (1,235 m) above sea level across all its land. Its ground runs from 1,750 ft on the north side to 7,710 ft on Farnham Ridge.
Average elevation
4,060 ft 1,235 m
all land inside the county
Highest
7,710 ft 2,350 m
on Farnham Ridge
Lowest
1,750 ft 530 m
on the north side
Boundary County spans about 5,960 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 | 4,060 ft1,235 m |
| Highest point Inside the county, on Farnham Ridge (3DEP terrain model; no NGS survey height) | 7,710 ft2,350 m |
| Lowest point Inside the county, on the north side | 1,750 ft530 m |
Elevation profile, west to east
34 mi west to east through Bonners Ferry.
Topographic Map
- Location
- County in Idaho, United States
- Population
- 14,040 2024 est.
- Land area
- 1,268.7 sq mi + 9.4 sq mi water
- Density
- 11 per sq mi
- Time zone
- Pacific UTC−8 / −7
- Landform region
- Northern Rocky Mountains 98%
- Drains to
- Pacific Ocean
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Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Lincoln County, MT4,270 ft
- Boundary County4,060 ft
- Pend Oreille County, WA3,470 ft
- Bonner County3,290 ft
Rankings by average elevation
- Counties in Idaho30th highest of 44
- Counties in the United States260th highest of 3,151
Peaks and hills highest inside
- Farnham Ridge7,710 ft
- Smith Peak7,640 ft
- Snowy Top7,568 ft
- Twin Peaks7,560 ft
- Roman Nose7,261 ft
All 2 towns in Boundary County by typical elevation
- Moyie Springs2,270 ft
- Bonners Ferry1,880 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; it is a named summit, so its height is the peak method: the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a survey mark sits within 160 ft (50 m) of it. 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.