Gretna, LA Elevation & Topographic Map

Topographic elevation map of Gretna, Louisiana, shaded from −13 ft on the south side to 19 ft on the north side
Elevation
20 ft 6 m12 ft 4 m8 ft 2 m0 ft 0 m−8 ft −3 m−12 ft −4 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.
City area
Fades everything outside the official city limits (US Census).

Elevation Data

Gretna sits about 1 ft (0 m) below sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.

Typical elevation
−1 ft 0 m
most residents: −5–4 ft
Lowest
−13 ft −4 m
on the south side
Highest
19 ft 6 m
on the north side
Average
−1 ft 0 m
all land inside city limits

Gretna spans about 32 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.

About 61% of residents live below sea level.

75% of Gretna's land lies below the average daily high tide (MHHW, NOAA), and 15% lies less than 3 ft above it. Check flood zones on FEMA's map

FigureElevation
Typical
Where people live: half of residents higher, half lower
−1 ft0 m
Highest point
Inside city limits, on the north side
19 ft6 m
Lowest point
Inside city limits, on the south side
−13 ft−4 m
Town center
USGS map point for Gretna
0 ft0 m
Airport (MSY)
FAA airport elevation, the highest point of its runways, 12 mi northwest of the city limits
3 ft1 m
Average of all land−1 ft0 m

Topographic Map

Topographic elevation map of Gretna, Louisiana, shaded from −13 ft on the south side to 19 ft on the north side
City limits (dashed) over shaded terrain, with contours every 10 ft (3 m).
Location
City in Jefferson Parish, Louisiana, United States
Population
17,185 2024 est.
Land area
4.0 sq mi + 0.5 sq mi water
Density
4,258 per sq mi
Coordinates
29.9146° N, 90.0540° W
Time zone
Central UTC−6 / −5
Landform region
Coastal Plain
Drains to
Gulf of America
Airport
Louis Armstrong New Orleans International (MSY) 3 ft
ZIP codes 2
70053 70056
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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. Estelle3 ft
  2. Marrero2 ft
  3. Westwego0 ft
  4. Arabi−1 ft
  5. Belle Chasse−1 ft
  6. Woodmere−1 ft
  7. Gretna−1 ft
  8. New Orleans−2 ft
  9. Terrytown−4 ft
  10. Harvey−4 ft
  11. Timberlane−5 ft

Rankings by typical elevation

How we measure
  • Typical elevation: the population-weighted median: every 2020 Census block inside the city 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 city 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); FAA airport data; BTS time zones; NOAA tidal surfaces (MHHW). All public domain.