Mercer Island, WA Elevation & Topographic Map

Topographic elevation map of Mercer Island, Washington, shaded from 16 ft on the northwest side to 390 ft near the middle
Elevation
390 ft 120 m300 ft 90 m250 ft 75 m160 ft 50 m63 ft 19 m16 ft 5 m
Contours every 200 ft, bold every 1,000 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.
City area
Fades everything outside the official city limits (US Census).

Elevation Data

Mercer Island sits at about 200 ft (60 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
200 ft 60 m
most residents: 77–340 ft
Lowest
16 ft 5 m
on the northwest side
Highest
390 ft 120 m
near the middle
Average
200 ft 60 m
all land inside city limits

Mercer Island spans about 374 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.

FigureElevation
Typical
Where people live: half of residents higher, half lower
200 ft60 m
Highest point
Inside city limits, near the middle
390 ft120 m
Lowest point
Inside city limits, on the northwest side
16 ft5 m
Town center
USGS map point for Mercer Island
330 ft100 m
Airport (SEA)
FAA airport elevation, the highest point of its runways, 5.9 mi southwest of the city limits
432 ft132 m
Average of all land200 ft60 m
Nearest peak
Squak Mountain, 7.7 mi southeast of the city limits
2,020 ft615 m

Elevation profile, south to north

5.2 mi south to north through the town center.

Topographic Map

Topographic elevation map of Mercer Island, Washington, shaded from 16 ft on the northwest side to 390 ft near the middle
City limits (dashed) over shaded terrain, with contours every 100 ft (30 m).
Location
City in King County, Washington, United States
Population
25,302 2024 est.
Land area
6.4 sq mi + 6.5 sq mi water
Density
3,964 per sq mi
Coordinates
47.5707° N, 122.2221° W
Time zone
Pacific UTC−8 / −7
Landform region
Pacific Border
Drains to
Strait of Juan de Fuca
Airport
Seattle-tacoma International (SEA) 432 ft
ZIP codes 1
98040
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Sources: U.S. Census Bureau, USGS, FAA

Nearby Places

How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the city limits, 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 city limits (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).
  • 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.
  • Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (boundaries, 2020 blocks, 2024 population estimates, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones; NOAA NGS survey heights. All public domain.