Ronkonkoma, NY Elevation & Topographic Map

Topographic elevation map of Ronkonkoma, New York, shaded from 30 ft on the southwest side to 180 ft near the middle
Elevation
180 ft 55 m140 ft 45 m120 ft 35 m85 ft 26 m49 ft 15 m31 ft 9 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

Ronkonkoma sits at about 91 ft (28 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
91 ft 28 m
most residents: 55–130 ft
Lowest
30 ft 9 m
on the southwest side
Highest
180 ft 55 m
near the middle
Average
87 ft 26 m
all land inside the CDP boundary

Ronkonkoma spans about 150 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
91 ft28 m
Highest point
Inside the CDP boundary, near the middle
180 ft55 m
Lowest point
Inside the CDP boundary, on the southwest side
30 ft9 m
Airport (ISP)
FAA airport elevation, the highest point of its runways
99 ft30 m
Average of all land87 ft26 m

Elevation profile, west to east

1.7 mi west to east through the middle of Ronkonkoma.

Topographic Map

Topographic elevation map of Ronkonkoma, New York, shaded from 30 ft on the southwest side to 180 ft near the middle
CDP boundary (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
Unincorporated community (census-designated place) in Suffolk County, New York, United States
Population
18,955 2020 Census
Land area
8.1 sq mi + 0.3 sq mi water
Density
2,338 per sq mi
Coordinates
40.8133° N, 73.1356° W
Time zone
Eastern UTC−5 / −4
Landform region
Coastal Plain
Drains to
Atlantic Ocean
Airport
Long Island Mac Arthur (ISP) 99 ft
ZIP codes 1
11779
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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. Lake Ronkonkoma110 ft
  2. Lake Grove110 ft
  3. Centereach110 ft
  4. Nesconset100 ft
  5. Ronkonkoma91 ft
  6. Hauppauge82 ft
  7. Holbrook78 ft
  8. Islandia74 ft
  9. Central Islip68 ft
  10. Village of the Branch56 ft
  11. Bohemia55 ft

Rankings by typical elevation

Peaks and hills nearest, by height

  • South Beacon Mountain1,600 ft
  • Dix Hills350 ft
  • Signal Hill, Suffolk County320 ft
  • Half Hollow Hills260 ft
  • Mount Misery, Suffolk County180 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).
  • 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.
  • Ronkonkoma 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.