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Welcome to Grand Isle ...

The coastal town of Grand Isle is located in Jefferson Parish<1>.

While we don't have a date for the founding of Grand Isle, you might consider that their post office opened in 1873.

From the  Census Estimates for 2019, Grand Isle has a population of 1,442 people<2> (see below for details).

Grand Isle is near sea level<3>.

Time Zone: Grand Isle lies in the Central Time Zone (CST/CDT) and observes daylight saving time

Area Code for Grand Isle: 504

The ZIP code for Grand Isle: 70358<4>

Population Details ...

Taken from the 2019 Census Estimates, Grand Isle had an population of 1,442 people. This is an increase of 11.27% since the 2010 Census (or a decrease of 6.42% since the 2000 Census).

At the time of the 2010 Census, Grand Isle had a population of 1,296 people. This makes Grand Isle the parish's 6th most populous community.

The population of Grand Isle represents 0.03% of the population of Louisiana (which has 4,533,372 people), making it the state's 149th most populous community.

With a 2010 count of 1,296 people, the population of Grand Isle decreased 15.9% from the 2000 Census (which had a count of 1,541 people).

More information can be found on the Census Page for Grand Isle.

Communities Also Named Grand Isle ...

Using our Gazetteer, we found that there are 2 communities that are also named Grand Isle - they are located in Maine and Vermont.

For more information, see our Tidbits & Trivia Page for Grand Isle.

Communities near Grand Isle ...

We have created a list of 10 communities that are near Grand Isle.

  • Golden Meadow
    (19 miles [30.6 km] to the northwest)
  • Leeville
    (13 miles [20.9 km] to the west)
  • Port Fourchon
    (14 miles [22.5 km] to the southwest)
    • Port Fourchon is located in Lafourche Parish
    • Jump to our Gazetteer entry for Port Fourchon
  • Faleau ‑ Historic
    (23 miles [37 km] to the northwest)
    • Faleau is located in Lafourche Parish
    • Jump to our Gazetteer entry for Faleau
  • Galliano
    (23 miles [37 km] to the northwest)
  • Diamond
    (25 miles [40.2 km] to the northeast)
  • Grand Bayou Village ‑ Historic
    (25 miles [40.2 km] to the northeast)
    • Grand Bayou Village is located in Plaquemines Parish
    • Jump to our Gazetteer entry for Grand Bayou Village
  • Happy Jack
    (25 miles [40.2 km] to the northeast)
  • Port Sulphur
    (25 miles [40.2 km] to the northeast)
  • Potash
    (25 miles [40.2 km] to the northeast)

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around Grand Isle. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Grand Isle.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Grand Isle. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Grand Isle.

We also have a detailed list of newspapers that have been published in the area around Grand Isle. See our Newspapers Page for Grand Isle.

TripAdvisor Tourism Pages for Grand Isle ...

Looking for more information about Grand Isle? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for Grand Isle, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Grand Isle.

Adding Grand Isle to Our Gazetteer ...

We originally found mention of Grand Isle in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found (so far) for Grand Isle was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<6>

From that list, the Grand Isle post office opened in 1873.

For more details, see References and Mentions for Grand Isle.

Footnotes ...

<1>If you're interested in how the shape of Louisiana's parishes, including Jefferson, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for Grand Isle.
<3>The elevation is an estimate for the area around Grand Isle - it will be higher in some places and lower in others.
<4>ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a town (such as Grand Isle). When looking for a ZIP Code, whether Grand Isle or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<5>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.
<6>A copy of the Blevins & Helbock Post Office list with background information can be found at:

      https://cblevins.github.io/us-post-offices/data-biography/