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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/KNOX

Knox ZIP code, Indiana

The ZIP code for Knox, IN is 46534, and its area code is 574.

USPS city name
1 ZIP code
Population
3,479
Area code
574
State
Indiana

Knox in numbers

About 3,479 people live in Knox, in 1,469 households. The median household income is $48,931 a year, 32% below the Indiana median of $71,957 (US: $80,734). The median owner-occupied home is valued at $140,300 (36% below the Indiana median), and median gross rent is $540 a month. The median age is 43.6; 11.5% of adults 25 and over hold a bachelor's degree or higher (29.5% across Indiana); the average commute takes 32 minutes.

Population3,479Knox3,479
Households1,469Knox1,469
Median age43.6Knox43.6Indiana38.1US 38.9
Median household income$48,931Knox$48,931Indiana$71,957US $80,734
Median home value$140,300Knox$140,300Indiana$218,200US $332,700
Median gross rent$540Knox$540Indiana$1,062US $1,413
Bachelor's degree or higher11.5%Knox11.5%Indiana29.5%US 35.7%
Mean commute31.9 minKnox31.9 minIndiana24.1 minUS 26.4 min
Population density879 / sq miKnox879 / sq mi

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

ZIP codes addressed as Knox

ZIP codes with the USPS city name Knox
ZIP City Type Population Median income Median home
46534 Knox , IN Standard 10,811 $63,138 $169,100

Map of Knox ZIP codes

46534

The ZIP codes of Knox, 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 Knox

The nearest larger towns are Plymouth (10,664 people, 16 mi), La Porte (22,449 people, 22 mi) and Westville (5,279 people, 23 mi).

Towns near Knox
TownPopulationDistance
Plymouth 10,664 16.2 mi
La Porte 22,449 22.3 mi
Westville 5,279 22.5 mi
Valparaiso 34,733 25.9 mi
Bremen 4,642 26.7 mi
Rochester 6,215 27.2 mi
Shorewood Forest 3,263 29.7 mi

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

Cite this page

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

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