🇺🇸 United States ZIP Code

STANDARD

70056

Gretna

ZIP Code 70056 is a standard zip code serving Gretna, Gretna, Louisiana (LA), in Jefferson Parish County, United States. It has an estimated population of 39,082 with a median household income of $50,672. 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: Gretna
Timezone: America/Chicago

Coordinates

Latitude: 29.887200
Longitude: -90.033100

Geographic Details

Land Area: 6.77 mi²
Water Area: 0.06 mi²
Population Density: 5774.0 people per mi² (95th percentile)
Bounding Box: 29.929013°N, 29.847849°S, -90.007952°E, -90.044486°W

With 39,082 residents spread across 6.77 square miles, this area has a population density of 5774.0 people per square mile.

Demographics

39,082

Population

90th percentile

$50,672

Median Income

55th percentile

$163,600

Median Home Value

65th percentile

6.77 mi²

Land Area

The median household income in 70056 is $50,672, and the median home value is $163,600.

Housing

15,224

Total Units

13,915

Occupied Units

91.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Gretna, LA.

70053

Gretna

70054

Gretna

Similar ZIP Codes in Louisiana

ZIP codes with similar median household income in Louisiana.

70357

Golden Meadow

$50,000

70446

Loranger

$58,224

70342

Berwick

$45,518

70647

Iowa

$53,397

70344

Chauvin

$43,074

71229

Collinston

$45,658

70542

Gueydan

$45,438

70783

Ventress

$51,198

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.