Find the last 4 digits (ZIP+4) for an address in 70403

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ZIP Code 70403 – Hammond, LA

Hammond, Louisiana · Tangipahoa Parish · Central time

ZIP code70403
CityHammond
StateLouisiana
CountyTangipahoa ParishLivingston Parish
Population30,173
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area42.32 sq mi
Center (lat, long)30.4856, -90.4877

Area codes in this area

985504

These are the area codes that most often serve ZIP 70403 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

70404 Hammond · 2 mi70402 Hammond · 2.4 mi70401 Hammond · 3.8 mi70451 Natalbany · 4.4 mi70466 Tickfaw · 5.8 mi70711 Albany · 6.8 mi70462 Springfield · 9.4 mi70455 Robert · 10.2 mi

About ZIP 70403

ZIP code 70403 is assigned to Hammond, Louisiana. It crosses 2 counties; most of its land is in Tangipahoa Parish. Its Census area covers about 42.32 square miles of land. The closest neighboring ZIP is 70404 (Hammond), about 2 miles away.

Every address in 70403 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources