Seaford, NY Elevation & Topographic Map

Topographic elevation map of Seaford, New York, shaded from sea level level on Zachs Bay to 54 ft on the north side
Elevation
54 ft 16 m40 ft 12 m34 ft 10 m20 ft 6 m7 ft 2 m0 ft 0 m
Contours every 100 ft, bold every 500 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.
Area
Fades everything outside the official CDP boundary (US Census).

Elevation Data

Seaford sits at about 12 ft (4 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
12 ft 4 m
most residents: 4–37 ft
Lowest
0 ft 0 m
at sea level on Zachs Bay
Highest
54 ft 16 m
on the north side
Average
16 ft 5 m
all land inside the CDP boundary

Seaford spans about 54 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
12 ft4 m
Highest point
Inside the CDP boundary, on the north side
54 ft16 m
Lowest point
Where the land meets Zachs Bay
0 ft0 m
Town center
USGS map point for Seaford
10 ft3 m
Airport (JFK)
FAA airport elevation, the highest point of its runways, 14 mi west of the CDP boundary
13 ft4 m
Average of all land16 ft5 m

Elevation profile, south to north

3.1 mi south to north through the town center.

Topographic Map

Topographic elevation map of Seaford, New York, shaded from sea level level on Zachs Bay to 54 ft on the north side
CDP boundary (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
Unincorporated community (census-designated place) in Nassau County, New York, United States
Population
15,251 2020 Census
Land area
2.6 sq mi + 0.1 sq mi water
Density
5,843 per sq mi
Coordinates
40.6659° N, 73.4882° W
Time zone
Eastern UTC−5 / −4
Landform region
Coastal Plain
Drains to
Atlantic Ocean
Airport
John F Kennedy International (JFK) 13 ft
ZIP codes 1
11783
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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, FAA

Nearby Places

Nearby towns by typical elevation

  1. Plainedge77 ft
  2. North Massapequa54 ft
  3. North Wantagh47 ft
  4. North Bellmore41 ft
  5. Massapequa Park28 ft
  6. Wantagh25 ft
  7. East Massapequa17 ft
  8. Seaford12 ft
  9. Merrick11 ft
  10. Massapequa10 ft
  11. Bellmore9 ft

Rankings by typical elevation

Peaks and hills nearest, by height

  • South Beacon Mountain1,600 ft
  • West Hills390 ft
  • Signal Hill, Suffolk County320 ft
  • Mannetto Hills300 ft
  • Half Hollow Hills260 ft
How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the CDP boundary, 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 CDP boundary (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, −2 ft at 40.6518° N, 73.4874° 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: 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.
  • Seaford is an unincorporated community; figures cover the census-designated place, a statistical area.
  • Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (boundaries, 2020 blocks, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones. All public domain.