Grand Isle is a town in Jefferson Parish, Louisiana, home to about 623 people across 6.4 square miles. Its ZIP code is 70358.
Homes sold for a median of $169 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Grand Isle. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Grand Isle’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Grand Isle well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Louis Armstrong New Orleans International Airport (MSY)55 miles away |
|---|---|
| Nearest city of 250,000+ | New Orleans, LA57 miles away |
| Nearest city of 1 million+ | Houston, TX326 miles away |
Straight-line distances from the center of Grand Isle; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Grand Isle had 1,005 residents in the 2020 census, down 35% since 2000.
It’s the 326th largest of 487 towns in Louisiana by population.
Jefferson Parish grew from 15,321 residents in 1900 to 440,781 in 2020.
Jefferson Parish, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 45°F. About 66.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Galliano, LA weather station (24 miles away).
177,065 jobs at 11,728 businesses in Jefferson Parish. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Grand Isle.
Nearest hospitals
Providers with an office here
| Mental health providers | 1 |
|---|
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (2 nearby)
Libraries (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Jefferson Parish. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Grand Isle High SchoolGrand Isle | Pre-K–12 | 76 | Public | 0.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
Buying or selling around Grand Isle? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.