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Zip Code 70056 — Gretna, LA

70056 is a ZIP Code associated with Gretna, LA, located within Jefferson. The postal region supports an estimated population of 40,348 residents across Data Pending housing units, with a population density of 2,303.0 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (29.888480, -90.030280)

Data Metric	Local Statistic
Postal / Zip Code	70056
Primary City	Gretna
State / Province	LA
County	Jefferson
Total Population	40,348
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	2,303.0 people/sq mi
Timezone	America/Chicago

How 70056 Compares

Metric	ZIP 70056	Jefferson County	LA State Average
Population	40,348	430,920	4,611,457
Median Income	Data Pending	N/A	N/A
Population Density	2,303.0 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 70053	Gretna	2.3 mi	16,621	N/A
Zip 70058	Harvey	2.5 mi	39,578	N/A
Zip 70114	New Orleans	3.4 mi	22,659	N/A
Zip 70130	New Orleans	4.1 mi	12,560	N/A
Zip 70131	New Orleans	4.4 mi	25,151	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →