Jefferson County, WA Elevation & Topographic Map

Topographic elevation map of Jefferson County, Washington, shaded from sea level on the Salish Sea to 7,980 ft on Mount Olympus
Elevation
7,980 ft 2,430 m5,990 ft 1,825 m4,990 ft 1,520 m2,990 ft 910 m1,000 ft 305 m0 ft 0 m
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USGS 3DEP · U.S. Census Bureau
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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

Jefferson County averages about 2,130 ft (650 m) above sea level across all its land. Its ground runs from sea level on the Salish Sea to 7,980 ft on Mount Olympus.

Average elevation
2,130 ft 650 m
all land inside the county
Highest
7,980 ft 2,432 m
on Mount Olympus
Lowest
0 ft 0 m
at sea level on the Salish Sea

Jefferson County spans about 7,980 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.

FigureElevation
Average of all land2,130 ft650 m
Highest point
Inside the county, on Mount Olympus (NGS survey height)
7,980 ft2,432 m
Lowest point
Where the land meets the Salish Sea
0 ft0 m

Elevation profile, south to north

33 mi south to north through Port Townsend.

Topographic Map

Topographic elevation map of Jefferson County, Washington, shaded from sea level on the Salish Sea to 7,980 ft on Mount Olympus
County boundary (dashed) over shaded terrain, with contours every 500 ft (152 m).
Location
County in Washington, United States
Population
33,944 2024 est.
Land area
1,803.7 sq mi + 384.2 sq mi water
Density
19 per sq mi
Time zone
Pacific UTC−8 / −7
Landform region
Pacific Border 99%
Drains to
Strait of Juan de Fuca 67%, Pacific Ocean 33%
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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

  1. Jefferson County2,130 ft
  2. Clallam County1,510 ft
  3. Mason County1,000 ft
  4. Grays Harbor County510 ft
  5. Kitsap County310 ft
  6. San Juan County290 ft
  7. Island County200 ft

Rankings by average elevation

Peaks and hills highest inside

  • Mount Olympus7,980 ft
  • Mount Deception7,780 ft
  • Mount Constance7,680 ft
  • Mount Anderson7,330 ft
  • The Brothers6,840 ft
All 7 towns in Jefferson County by typical elevation
  1. Port Ludlow210 ft
  2. Quilcene170 ft
  3. Brinnon140 ft
  4. Port Townsend140 ft
  5. Port Hadlock-Irondale120 ft
  6. Marrowstone100 ft
  7. Queets68 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 2 arc-second (≈200 ft, 62 m) grid, coarsened from 1 arc-second so the whole area fits one run. Land means the boundary minus Census area water (on this grid, water areas of at least half a cell).
  • Highest and lowest: the highest land cell, re-read at 1 arc-second around the 25 highest grid cells; 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, re-read at 1 arc-second around the 25 lowest grid cells; 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, −4 ft at 47.9604° N, 122.6799° W, is in such a hollow or patch and is not counted; this coastal land's lowest point is sea level on the coast.
  • 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.