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Zip Code 70358 — Grand Isle, LA

70358 is a ZIP Code associated with Grand Isle, LA, located within Jefferson. The postal region supports an estimated population of 623 residents across Data Pending housing units, with a population density of 37.2 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (29.213670, -90.030600)

Data Metric	Local Statistic
Postal / Zip Code	70358
Primary City	Grand Isle
State / Province	LA
County	Jefferson
Total Population	623
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	37.2 people/sq mi
Timezone	America/Chicago

How 70358 Compares

Metric	ZIP 70358	Jefferson County	LA State Average
Population	623	430,920	4,611,457
Median Income	Data Pending	N/A	N/A
Population Density	37.2 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 70357	Golden Meadow	10.0 mi	2,351	N/A
Zip 70083	Port Sulphur	23.9 mi	2,317	N/A
Zip 70354	Galliano	24.1 mi	3,404	N/A
Zip 70345	Cut Off	24.5 mi	8,344	N/A
Zip 70050	Empire	28.7 mi	N/A	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 →