ZIP code · Grand Isle · Louisiana · United States
ZIP code 70358 — Grand Isle
ZIP code 70358 serves Grand Isle, Louisiana.
- Postal code
- 70358Single source Value from one source, not cross-checked.
- City
- Grand Isle
- County
- Jefferson Parish FIPS 22051
- State
- Louisiana
- Country
- United States
- Coordinates
- 29.2297, -90.0088 — precision precise (locality)
View on OpenStreetMap - Population
- 644 (ZCTA, ACS 5-year)
- Population density
- 100 / sq mi
- Land area
- 6.5 sq mi (16.8 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $35,590
- Median age
- 54
- Households
- 354
- Housing units
- 1,703
- Median home value
- $266,100
- Median gross rent
- $1,118 / month
- Congressional district
- LA-1 (119th Congress)
- USDA hardiness zone
- 10a (30 to 35 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 985Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 70358 with another ZIP · ZIPs within 25 miles · distance from 70358
Map of ZIP code 70358
Climate — monthly normals
Warmest month Aug (avg high 89°F), coldest Jan (avg low 45°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 63 | 66 | 71 | 77 | 83 | 88 | 89 | 89 | 86 | 80 | 71 | 65 |
| Avg low °F | 45 | 48 | 55 | 61 | 68 | 74 | 76 | 76 | 72 | 63 | 52 | 47 |
| Precip in | 5.6 | 4.2 | 4.7 | 4.4 | 5.1 | 6.9 | 9.2 | 7.6 | 6.6 | 4.3 | 3.5 | 4.7 |
NOAA 1991–2020 climate normals from the nearest station: GALLIANO (24.2 mi) · NOAA NCEI
Places in ZIP 70358
- 1 schools
- 2 restaurants & cafés
- 4 parks
- 2 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 1 places of worship
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page