ZIP code · Hammond · Louisiana · United States

ZIP code 70402 — Hammond

ZIP code 70402 serves Hammond, Louisiana.

Postal code
70402
Single source Value from one source, not cross-checked.
City
Hammond
County
Tangipahoa FIPS 22105
State
Louisiana
Country
United States
Coordinates
30.5140, -90.4804 — precision precise (locality)
View on OpenStreetMap
Population
1,859 (ZCTA, ACS 5-year)
Population density
15,046 / sq mi
Land area
0.1 sq mi (0.3 km²) (ZCTA, ACS 5-year)
Per-capita income
$2,639
Median age
19.5
Households
0
Housing units
0
Congressional district
LA-5 (119th Congress)
USDA hardiness zone
9a (20 to 25 °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
985
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.

Climate — monthly normals

Warmest month Aug (avg high 92°F), coldest Jan (avg low 38°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F626572788590929288817064
Avg low °F384249556369727167564641
Precip in5.84.65.35.65.46.76.85.64.44.14.25.9

NOAA 1991–2020 climate normals from the nearest station: HAMMOND 5 E (6.2 mi) · NOAA NCEI

Places in ZIP 70402

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