Benton County, OR Elevation & Topographic Map
Elevation
4,100 ft 1,250 m3,110 ft 950 m2,620 ft 800 m1,630 ft 495 m640 ft 195 m140 ft 45 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
Benton County averages about 760 ft (230 m) above sea level across all its land. Its ground runs from 140 ft on the southwest side to 4,102 ft on Marys Peak.
Average elevation
760 ft 230 m
all land inside the county
Highest
4,102 ft 1,250 m
on Marys Peak
Lowest
140 ft 45 m
on the southwest side
Benton County spans about 3,960 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 | 760 ft230 m |
| Highest point Inside the county, on Marys Peak (NGS survey height) | 4,102 ft1,250 m |
| Lowest point Inside the county, on the southwest side | 140 ft45 m |
Elevation profile, west to east
17 mi west to east through Corvallis.
Topographic Map
- Location
- County in Oregon, United States
- Population
- 98,899 2024 est.
- Land area
- 675.2 sq mi + 3.0 sq mi water
- Density
- 146 per sq mi
- Time zone
- Pacific UTC−8 / −7
- Landform region
- Pacific Border
- Drains to
- Pacific Ocean
⤓ 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
Neighboring counties sharing a border, by average
- Lane County2,160 ft
- Linn County2,070 ft
- Polk County850 ft
- Benton County760 ft
- Lincoln County700 ft
Rankings by average elevation
- Counties in Oregon32nd highest of 36
- Counties in the United States1,895th highest of 3,151
Peaks and hills highest inside
- Marys Peak4,102 ft
- Grass Mountain3,610 ft
- Prairie Mountain3,430 ft
- Old Blue Mountain3,300 ft
- Green Peak2,720 ft
All 11 towns in Benton County by typical elevation
- Summit770 ft
- Blodgett690 ft
- Bellfountain320 ft
- Kings Valley320 ft
- Monroe300 ft
- Alsea300 ft
- Alpine290 ft
- Philomath280 ft
- Adair Village280 ft
- Corvallis240 ft
- Albany partly230 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.
- 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, 130 ft at 44.3332° N, 123.8129° W, is in such a hollow or patch and is not counted.
- 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.