Duncannon, PA Elevation & Topographic Map

Elevation

500 ft 155 m460 ft 140 m440 ft 135 m400 ft 120 m360 ft 110 m340 ft 105 m

Contours every 40 ft, bold every 200 ft

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.
Borough area: Fades everything outside the official borough limits (US Census).

Elevation Data

Duncannon sits at about 370 ft (115 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation

370 ft 115 m

most residents: 350–420 ft

Lowest

340 ft 105 m

on the southwest side

Highest

500 ft 155 m

at the foot of the Little Mountain

Average

390 ft 120 m

all land inside borough limits

Duncannon spans about 160 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.

Figure	Elevation
Typical Where people live: half of residents higher, half lower	370 ft115 m
Highest point Inside borough limits, at the foot of the Little Mountain	500 ft155 m
Lowest point Inside borough limits, on the southwest side	340 ft105 m
Town center USGS map point for Duncannon	360 ft110 m
Average of all land	390 ft120 m

Elevation profile, west to east

0.5 mi west to east through the town center.

Topographic Map

Location: Borough in Perry County, Pennsylvania, United States
Population: 1,471 2024 est.
Land area: 0.4 sq mi
Density: 3,614 per sq mi
Coordinates: 40.3981° N, 77.0230° W
Time zone: Eastern UTC−5 / −4
Landform region: Valley and Ridge
Drains to: Susquehanna River → Atlantic Ocean
ZIP codes 1: 17020

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Sources: U.S. Census Bureau, USGS

Nearby Places

Nearby towns by typical elevation

Rankings by typical elevation

Towns in Pennsylvania3,213th highest of 3,545
Towns in Perry County31st highest of 32

Peaks and hills nearest, by height

Big Mountain2,460 ft
Greenlee Mountain2,420 ft
The Winehead2,363 ft
Quirauk Mountain2,140 ft
Cove Mountain, Perry County1,330 ft

How we measure

Typical elevation: the population-weighted median: every 2020 Census block inside the borough 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 borough 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); BTS time zones; NOAA NGS survey heights. All public domain.