Grand Isle ZIP Code List — Jefferson County, LA

There is one unique ZIP code in Grand Isle, Louisiana and it is 70358. Area code: 985.

ZIP codes

6.47

sq mi land

5.11

sq mi water

985

area code

Grand Isle, LA ZIP code map

About Grand Isle, LA

Grand Isle is a small but vibrant city located in Louisiana, known for its beautiful beaches and unique coastal ecosystem. Situated within Jefferson County, it offers a picturesque retreat for both locals and tourists eager to enjoy its natural beauty. The city is renowned for its rich fishing industry and enticing recreational activities, making it a prominent destination along the Louisiana coastline.

Location & geography

Grand Isle is situated along the Gulf of Mexico and boasts a land area of 6.47 square miles, with an impressive 5.11 square miles covered by water. The city is located approximately 25 miles south of Lafitte and about 30 miles from the town of Port Fourchon, providing convenient access to neighboring communities. The terrain is characterized by sandy beaches and marshlands, contributing to its lush aquatic environment.

Community & economy

The community of Grand Isle is known for its friendly atmosphere and strong ties to fishing and tourism, which are key components of its local economy. Residents often engage in recreational activities such as fishing, bird-watching, and enjoying the serene beaches, which contribute to the island's laid-back lifestyle. It's a close-knit community where local events and traditions play a significant role in daily life.

Transportation

Access to Grand Isle is primarily via Louisiana Highway 1, which connects the city to the mainland and nearby towns. The nearest major airport is Louis Armstrong New Orleans International Airport, located about 75 miles north of Grand Isle, providing connectivity to the wider region. Public transit options are limited, making personal vehicles the primary mode of transportation for residents and visitors.

History

Grand Isle was founded in the early 19th century and has since evolved into a popular coastal haven. Historically, it has been a hub for fishing and shrimping industries, drawing workers and tourists alike to its abundant marine resources. Notable events, such as hurricanes and environmental changes, have shaped its development and community resilience over the years.

Did you know?

One surprising fact about Grand Isle is that it is the only inhabited barrier island in Louisiana. The city's unique geographic location makes it a critical point for bird migration and a hub for ecotourism.

ZIP codes for Grand Isle, LA (1)

ZIP code	City	County	Map
70358	Grand Isle	Jefferson	View map

Demographics & statistics

903

Population

51.0

Median age

Median household income

$31,595

Per capita income

$257,900

Median home value

$1,028

Median monthly rent

72.4%

Home ownership

32.7%

Poverty rate

6.3%

Unemployment

1,773

Housing units

18.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

122

45–54

102

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	168	18.6%
18 and over	735	81.4%
65 and over	166	18.4%
Median age	51.0 years

Race & ethnicity

White 93.3%

Two or more races 3.6%

Hispanic or Latino 2.1%

Black or African American 0.7%

Other race 0.4%

Group	Count	%
White	860	93.3%
Two or more races	33	3.6%
Hispanic or Latino	19	2.1%
Black or African American	6	0.7%
Other race	4	0.4%

Household income

Under $10k 15.5%

$10k–$15k 20.0%

$15k–$25k 7.9%

$25k–$35k 1.2%

$35k–$50k 2.6%

$50k–$75k 1.4%

$75k–$100k 13.6%

$100k–$150k 28.1%

$150k–$200k 8.3%

$200k+ 1.4%

Range	% of households
Under $10k	15.5%
$10k–$15k	20.0%
$15k–$25k	7.9%
$25k–$35k	1.2%
$35k–$50k	2.6%
$50k–$75k	1.4%
$75k–$100k	13.6%
$100k–$150k	28.1%
$150k–$200k	8.3%
$200k+	1.4%
Median income	$0

Housing

Home values

Under $50k 3.9%

$100k–$150k 9.2%

$150k–$200k 16.8%

$200k–$300k 46.4%

$300k–$500k 23.7%

Housing overview

Metric	Value
Median home value	$257,900
Median rent / month	$1,028
Owner occupied	72.4%
Renter occupied	27.6%
Vacant	77.8%
Single-family detached	80.4%
Large apartment buildings	0.0%
Mobile homes	8.4%
Median rooms	5.2
Avg household size (owned)	2.14

Year built

Era	%
2020 or later	0.0%
2010–2019	4.7%
2000–2009	10.1%
1990–1999	13.1%
1980–1989	8.7%
1970–1979	21.5%
1960–1969	20.5%
1950–1959	3.3%
1940–1949	13.1%
1939 or earlier	4.8%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	3.2%
2 bedrooms	32.7%
3 bedrooms	50.7%
4 bedrooms	12.0%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	8.3%
1 vehicle	33.3%
2 vehicles	40.5%
3 or more	17.9%

Heating fuel

Fuel type	%
Utility gas	24.8%
Electricity	66.9%
No fuel used	8.3%

Households & families

Household type	Count	%
Married-couple family	205	48.8%
Cohabiting couple	24	5.7%
Male householder, no spouse	124	29.5%
Female householder, no spouse	67	16.0%
Households with children under 18	102	24.3%
Households with seniors (65+)	112	26.7%
Average household size	2.12

Marital status

Status	Male	Female
Never married	22.8%	22.3%
Married	50.4%	59.0%
Separated	0.0%	0.0%
Widowed	0.0%	8.0%
Divorced	26.8%	10.7%

Education

Less than 9th grade 10.7%

Some HS, no diploma 6.5%

HS graduate 43.9%

Some college, no degree 17.2%

Associate's degree 3.1%

Bachelor's degree 14.9%

Graduate / professional 3.7%

Metric	%
HS diploma or higher	82.8%
Bachelor's or higher	18.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	31	17.4%
Kindergarten	6	3.4%
Elementary school	96	53.9%
High school	38	21.3%
College / grad school	7	3.9%

Employment

Industry of employment

Professional & management 18.4%

Education & healthcare 15.7%

Arts, food & hospitality 14.7%

Transportation & utilities 11.2%

Finance & real estate 9.3%

Agriculture & mining 8.3%

Manufacturing 7.5%

Retail trade 5.9%

Other services 4.8%

Public administration 4.3%

Occupation

Category	%
Management, business & arts	19.7%
Service	35.7%
Sales & office	25.1%
Natural resources & construction	9.6%
Production & transportation	9.9%

Employment type

Type	%
Private sector	65.9%
Government	20.3%
Self-employed	13.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.5%
Carpool	6.3%
Public transit	0.0%
Walk	8.4%
Other means	4.6%
Avg commute (minutes)	31.7

Poverty

All people 32.7%

Under 18 years 37.5%

18 and over 31.6%

Married-couple families 13.2%

Female-led households 41.9%

Income support

Source	% of households
Social Security	26.9%
Retirement income	15.2%
Supplemental Security	8.1%
Cash public assistance	0.0%
Food stamps / SNAP	8.6%

Health indicators

Condition	%
High blood pressure	40.5%
High cholesterol	40.4%
Heart disease	9.1%
Stroke	4.2%
Asthma	9.2%
Arthritis	30.1%
Kidney disease	3.6%
Pulmonary disease	10.4%
Cancer	7.2%

Behavior / access	%
Binge drinking	19.5%
No physical activity	33.0%
Less than 7 hrs sleep	36.6%
Fair or poor health	21.1%
Poor mental health	17.7%
Poor physical health	14.4%
No health insurance	14.5%
Visited doctor (checkup)	76.3%
Visited dentist	56.0%
Cholesterol screening	89.6%
Teeth loss	18.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	54	7.5%

Disability	%
Any disability	30.9%
Under 18	0.0%
18–64 years	26.9%
65 and over	75.3%

Health insurance coverage

Type	%
Private insurance	56.3%
Public insurance	50.3%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	855	94.7%
Spanish	18	2.1%
Other Indo-European	18	2.1%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	885	98.0%
Born in same state	885	98.0%
Born in different state	642	71.1%
Foreign born	0	0.0%
Naturalized citizen	18	2.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
German	87	9.6%
French	71	7.9%
Italian	45	5%

Ancestry	Count	%
Dutch	16	1.8%
Arab	13	1.4%

Technology access

Metric	% of households
Computer access	46.5%
Internet access	78.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Grand Isle, LA?

Grand Isle, LA has one ZIP code: 70358.

What is the main ZIP code for Grand Isle, LA?

The primary ZIP code for Grand Isle, LA is 70358. The city uses area code 985 for phone service.

What county is Grand Isle, LA in?

Grand Isle is located in Jefferson County, Louisiana.

How many ZIP codes are in Grand Isle, LA?

Grand Isle, LA has 1 ZIP code.

What is the ZIP code for the Grand Isle community located on the barrier island in Jefferson Parish?

The ZIP code for Grand Isle is 70358. This covers the entire unincorporated community situated on the southernmost inhabited barrier island in Louisiana.

If I'm sending mail to a business at the Grand Isle Marina area, what ZIP code should I use?

You should use ZIP code 70358, as all addresses in Grand Isle, including the marina and waterfront areas, are served by this single ZIP code.