ZIP code · Gretna · Louisiana · United States
ZIP code 70056 — Gretna
ZIP code 70056 serves Gretna, Louisiana.
- Postal code
- 70056Single source Value from one source, not cross-checked.
- City
- Gretna
- County
- Jefferson Parish FIPS 22051
- State
- Louisiana
- Country
- United States
- Coordinates
- 29.8872, -90.0331 — precision precise (locality)
View on OpenStreetMap - Population
- 42,471 (ZCTA, ACS 5-year)
- Population density
- 6,279 / sq mi
- Land area
- 6.8 sq mi (17.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $61,831
- Per-capita income
- $29,287
- Median age
- 35.1
- Households
- 14,847
- Housing units
- 15,784
- Median home value
- $223,000
- Median gross rent
- $1,163 / month
- Congressional district
- LA-2 (119th Congress)
- USDA hardiness zone
- 9b (25 to 30 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 504 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 70056 with another ZIP · ZIPs within 25 miles · distance from 70056
Map of ZIP code 70056
Climate — monthly normals
Warmest month Jul (avg high 92°F), coldest Jan (avg low 45°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 63 | 66 | 73 | 78 | 85 | 90 | 92 | 92 | 89 | 81 | 72 | 65 |
| Avg low °F | 45 | 49 | 54 | 61 | 68 | 75 | 76 | 76 | 73 | 63 | 53 | 48 |
| Precip in | 5.8 | 4.0 | 5.2 | 5.2 | 4.7 | 6.9 | 7.3 | 6.8 | 6.8 | 3.7 | 4.2 | 5.4 |
NOAA 1991–2020 climate normals from the nearest station: TERRYTOWN 3S (1.6 mi) · NOAA NCEI
Places in ZIP 70056
- 18 schools
- 2 hospitals & clinics
- 1 pharmacies
- 3 supermarkets
- 16 restaurants & cafés
- 2 parks
- 5 playgrounds
- 4 places of worship
- 3 banks
- 6 gas stations
- 4 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page