Zip Code 70401 — Hammond, LA

ZIP Code 70401 is associated with Hammond, LA, in Tangipahoa County. The listed population estimate is 21,221; estimated density is 236.1 people per square mile. Among records with population estimates, it ranks #3 of 15 in Tangipahoa County and #82 of 524 in LA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (30.528100, -90.454720)

Data MetricLocal Statistic
Postal / Zip Code70401
Primary CityHammond
State / ProvinceLA
CountyTangipahoa
Total Population21,221
Population Density236.1 people/sq mi
TimezoneAmerica/Chicago

How 70401 Compares

MetricZIP 70401Tangipahoa County recordsLA records
Population estimate21,221144,482 (sum)4,611,457 (sum)
Population Density236.1 /sq mi----
County population rank#3 of 15----
State population rank#82 of 524----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in LA

ZIP CodeCityDistancePopulation estimate
ZIP 70402Hammond1.2 mi1,850
ZIP 70451Natalbany2.2 mi65
ZIP 70403Hammond3.8 mi30,173
ZIP 70466Tickfaw4.0 mi10,148
ZIP 70455Robert8.1 mi2,181

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →