Ayer, MA Elevation & Topographic Map

Elevation
480 ft 145 m410 ft 125 m370 ft 115 m300 ft 95 m230 ft 70 m200 ft 60 m
Contours every 100 ft, bold every 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.
- Town area
- Fades everything outside the official town boundaries (US Census).
Elevation Data
Ayer sits at about 270 ft (80 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
270 ft 80 m
most residents: 220–340 ft
Lowest
200 ft 60 m
on the north side
Highest
480 ft 145 m
on Snake Hill
Average
260 ft 80 m
all land inside town boundaries
Ayer spans about 280 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 | 270 ft80 m |
| Highest point Inside town boundaries, on Snake Hill | 480 ft145 m |
| Lowest point Inside town boundaries, on the north side | 200 ft60 m |
| Town center USGS map point for Ayer | 240 ft75 m |
| Airport (6B6) FAA airport elevation, the highest point of its runways, 5.8 mi southeast of the town boundaries | 280 ft85 m |
| Average of all land | 260 ft80 m |
Elevation profile, west to east
4.5 mi west to east through the town center.
Topographic Map
- Location
- Town in Middlesex County, Massachusetts, United States
- Population
- 9,010 2024 est.
- Land area
- 8.9 sq mi + 0.6 sq mi water
- Density
- 1,007 per sq mi
- Coordinates
- 42.5612° N, 71.5898° W
- Time zone
- Eastern UTC−5 / −4
- Landform region
- New England
- Drains to
- Merrimack River → Atlantic Ocean
- Airport
- Minute Man Air Field (6B6) 280 ft
- ZIP codes 2
- 01432 01434
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Lunenburg440 ft
- Harvard360 ft
- Devens290 ft
- Shirley280 ft
- Littleton Common280 ft
- Boxborough280 ft
- Groton270 ft
- Ayer270 ft
- Littleton260 ft
- Pepperell250 ft
- East Pepperell210 ft
Rankings by typical elevation
- Towns in Massachusetts164th highest of 435
- Towns in Middlesex County9th highest of 60
Peaks and hills nearest, by height
- Monadnock Mountain3,170 ft
- Mount Kearsarge2,930 ft
- Summit2,730 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).
- 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.