Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/LA/HAMMOND

Hammond ZIP codes, Louisiana

Hammond, LA has 4 ZIP codes (70403, 70401, 70402 and 70404) and area code 985. The largest is 70403.

USPS city name
4 ZIP codes
Overlapping the city
1 more
Population
21,539
Area code
985

Mail addressed to Hammond uses the ZIP codes above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Hammond in numbers

About 21,539 people live in Hammond, in 7,927 households, the 21st-largest of Louisiana's 488 census places. The median household income is $48,166 a year, 21% below the Louisiana median of $60,756 (US: $80,734). The median owner-occupied home is valued at $221,400 (about the same as the Louisiana median), and median gross rent is $1,061 a month. The median age is 27.7; 27.7% of adults 25 and over hold a bachelor's degree or higher (27.0% across Louisiana); the average commute takes 21 minutes.

Population21,539Hammond21,539
Households7,927Hammond7,927
Median age27.7Hammond27.7Louisiana38.0US 38.9
Median household income$48,166Hammond$48,166Louisiana$60,756US $80,734
Median home value$221,400Hammond$221,400Louisiana$216,500US $332,700
Median gross rent$1,061Hammond$1,061Louisiana$1,064US $1,413
Bachelor's degree or higher27.7%Hammond27.7%Louisiana27.0%US 35.7%
Mean commute21.0 minHammond21.0 minLouisiana25.7 minUS 26.4 min
Population density1,511 / sq miHammond1,511 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Hammond city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Hammond

ZIP codes with the USPS city name Hammond
ZIP City Type Population Median income Median home
70403 Hammond , LA Standard 30,173 $50,976 $212,400
70401 Hammond , LA Standard 21,221 $50,653 $211,000
70402 Hammond , LA Standard 1,850 — —
70404 Hammond , LA No street area — — —

Other ZIP codes overlapping Hammond

These ZIP codes cover part of Hammond but are addressed as somewhere else.

ZIP codes overlapping Hammond
ZIP City Type Population Median income Median home
70454 Ponchatoula , LA Standard 34,564 $71,611 $233,700

Map of Hammond ZIP codes

70403704017040270404

The ZIP codes of Hammond, LA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Hammond

The nearest larger towns are Laplace (28,343 people, 30 mi), Prairieville (35,238 people, 33 mi) and Central (29,783 people, 35 mi).

Towns near Hammond
TownPopulationDistance
Ponchatoula 7,808 4.6 mi
Amite City 4,048 16.0 mi
Covington 11,658 20.6 mi
Mandeville 12,946 23.0 mi
Walker 6,390 24.4 mi
Abita Springs 2,699 26.1 mi
Laplace 28,343 30.0 mi
Denham Springs 9,323 30.0 mi

More nearby: every ZIP code in Tangipahoa Parish · Louisiana ZIP codes

Cite this page

zipcodes.pro. “Hammond, LA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/la/hammond

Underlying data is public domain or openly licensed — sources, vintages and licences.