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/IN/PORTAGE

Portage ZIP code, Indiana

The ZIP code for Portage, IN is 46368, and its area code is 219.

USPS city name
1 ZIP code
Overlapping the city
4 more
Population
38,082
Area code
219
State
Indiana

Mail addressed to Portage uses the ZIP code above. 4 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Portage in numbers

About 38,082 people live in Portage, in 14,938 households, the 24th-largest of Indiana's 794 census places. The median household income is $76,276 a year, 6% above the Indiana median of $71,957 (US: $80,734). The median owner-occupied home is valued at $224,200 (about the same as the Indiana median), and median gross rent is $1,231 a month. The median age is 39.8; 18.4% of adults 25 and over hold a bachelor's degree or higher (29.5% across Indiana); the average commute takes 27 minutes.

Population38,082Portage38,082
Households14,938Portage14,938
Median age39.8Portage39.8Indiana38.1US 38.9
Median household income$76,276Portage$76,276Indiana$71,957US $80,734
Median home value$224,200Portage$224,200Indiana$218,200US $332,700
Median gross rent$1,231Portage$1,231Indiana$1,062US $1,413
Bachelor's degree or higher18.4%Portage18.4%Indiana29.5%US 35.7%
Mean commute27.3 minPortage27.3 minIndiana24.1 minUS 26.4 min
Population density1,486 / sq miPortage1,486 / sq mi

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

ZIP codes addressed as Portage

ZIP codes with the USPS city name Portage
ZIP City Type Population Median income Median home
46368 Portage , IN Standard 40,301 $76,368 $227,100

Other ZIP codes overlapping Portage

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

ZIP codes overlapping Portage
ZIP City Type Population Median income Median home
46304 Chesterton , IN Standard 28,307 $91,326 $293,100
46342 Hobart , IN Standard 32,224 $75,521 $213,000
46385 Valparaiso , IN Standard 40,856 $98,957 $331,700
46403 Gary , IN Standard 10,929 $45,991 $177,600

Map of Portage ZIP codes

46368

The ZIP codes of Portage, IN, 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 Portage

The nearest larger towns are Gary (68,113 people, 8.7 mi), Hammond (76,768 people, 16 mi) and Oak Lawn, IL (56,861 people, 31 mi).

Towns near Portage
TownPopulationDistance
Lake Station 13,185 4.0 mi
South Haven 7,241 4.2 mi
Porter 5,217 5.6 mi
Chesterton 14,446 6.4 mi
Hobart 29,558 7.4 mi
Gary 68,113 8.7 mi
Shorewood Forest 3,263 9.2 mi
Valparaiso 34,733 10.1 mi
Merrillville 36,476 10.9 mi
Winfield 7,816 13.1 mi
Lakes of the Four Seasons 7,402 13.2 mi
Griffith 16,273 13.4 mi
Westville 5,279 14.6 mi
East Chicago 26,022 14.7 mi

More nearby: every ZIP code in Porter County · Indiana ZIP codes

Cite this page

zipcodes.pro. “Portage, IN ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/in/portage

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