🇺🇸 United States ZIP Code

STANDARD

70358

Grand Isle

ZIP Code 70358 is a standard zip code serving Grand Isle, Grand Isle, Louisiana (LA), in Jefferson Parish County, United States. It has an estimated population of 1,296 with a median household income of $39,886. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Louisiana (LA)
County: Jefferson Parish
City: Grand Isle
Timezone: America/Chicago

Coordinates

Latitude: 29.229700
Longitude: -90.008800

Geographic Details

Land Area: 6.41 mi²
Water Area: 5.28 mi²
Population Density: 202.0 people per mi² (60th percentile)
Bounding Box: 29.270563°N, 29.162622°S, -89.945388°E, -90.090337°W

With 1,296 residents spread across 6.41 square miles, this area has a population density of 202.0 people per square mile.

Demographics

1,296

Population

30th percentile

$39,886

Median Income

25th percentile

$163,700

Median Home Value

65th percentile

6.41 mi²

Land Area

The median household income in 70358 is $39,886, and the median home value is $163,700. This is below the national average for household income.

Housing

1,945

Total Units

565

Occupied Units

29.0%

Occupancy Rate

Similar ZIP Codes in Louisiana

ZIP codes with similar median household income in Louisiana.

70589

Washington

$35,625

70062

Kenner

$34,778

70445

Lacombe

$42,603

71051

Elm Grove

$42,332

70380

Morgan City

$43,417

70346

Donaldsonville

$35,586

70764

Plaquemine

$45,608

70466

Tickfaw

$40,440

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.