Londonderry, NH Elevation & Topographic Map
Elevation
530 ft 160 m430 ft 130 m370 ft 115 m270 ft 80 m170 ft 50 m120 ft 35 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.
- Town area
- Fades everything outside the official town boundaries (US Census).
Elevation Data
Londonderry sits at about 310 ft (95 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
310 ft 95 m
most residents: 250–410 ft
Lowest
120 ft 35 m
on the northwest side
Highest
530 ft 160 m
on the north side
Average
310 ft 95 m
all land inside town boundaries
Londonderry spans about 410 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 | 310 ft95 m |
| Highest point Inside town boundaries, on the north side | 530 ft160 m |
| Lowest point Inside town boundaries, on the northwest side | 120 ft35 m |
| Town center USGS map point for Londonderry | 410 ft125 m |
| Airport (MHT) FAA airport elevation, the highest point of its runways, 0.0 mi northwest of the town boundaries | 266 ft81 m |
| Average of all land | 310 ft95 m |
Elevation profile, south to north
9.4 mi south to north through the town center.
Topographic Map
- Location
- Town in Rockingham County, New Hampshire, United States
- Population
- 27,101 2024 est.
- Land area
- 42.0 sq mi + 0.1 sq mi water
- Density
- 645 per sq mi
- Coordinates
- 42.8651° N, 71.3740° W
- Time zone
- Eastern UTC−5 / −4
- Landform region
- New England
- Drains to
- Merrimack River → Atlantic Ocean
- Airport
- Manchester Boston Regional (MHT) 266 ft
- ZIP codes 1
- 03053
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Chester370 ft
- Derry330 ft
- Londonderry310 ft
- Bedford290 ft
- Windham290 ft
- Merrimack220 ft
- Hudson210 ft
- Nashua190 ft
- Litchfield180 ft
- Pelham180 ft
- East Merrimack170 ft
Rankings by typical elevation
- Towns in New Hampshire209th highest of 260
- Towns in Rockingham County7th highest of 39
Peaks and hills nearest, by height
- Monadnock Mountain3,170 ft
- Mount Kearsarge2,930 ft
- Belknap Mountain2,382 ft
- North Pack Monadnock Mountain2,260 ft
- Crotched Mountain2,063 ft
How we measure
- Typical elevation: the population-weighted median: every 2020 Census block inside the town boundaries, 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 town boundaries (TIGER, Jan 1 2026).
- 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, 75 ft at 42.8296° N, 71.4257° W, is in such a hollow or patch and is not counted.
- 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.