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zipcodes.pro — CITY/IN/ST-JOHN

St. John ZIP code, Indiana

The ZIP code for St. John, IN is 46373, and its area code is 219.

USPS city name
1 ZIP code
Overlapping the city
4 more
Population
22,567
Area code
219
State
Indiana

Also written Saint John, the spelling the Postal Service uses.

Mail addressed to St. John 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.

St. John in numbers

About 22,567 people live in St. John, in 7,844 households, the 45th-largest of Indiana's 794 census places. The median household income is $131,467 a year, 83% above the Indiana median of $71,957 (US: $80,734). The median owner-occupied home is valued at $406,300 (86% above the Indiana median), and median gross rent is $989 a month. The median age is 42.3; 43.7% of adults 25 and over hold a bachelor's degree or higher (29.5% across Indiana); the average commute takes 31 minutes.

Population22,567St. John22,567
Households7,844St. John7,844
Median age42.3St. John42.3Indiana38.1US 38.9
Median household income$131,467St. John$131,467Indiana$71,957US $80,734
Median home value$406,300St. John$406,300Indiana$218,200US $332,700
Median gross rent$989St. John$989Indiana$1,062US $1,413
Bachelor's degree or higher43.7%St. John43.7%Indiana29.5%US 35.7%
Mean commute31.2 minSt. John31.2 minIndiana24.1 minUS 26.4 min
Population density1,771 / sq miSt. John1,771 / sq mi

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

ZIP codes addressed as Saint John

ZIP codes with the USPS city name Saint John
ZIP City Type Population Median income Median home
46373 Saint John , IN Standard 18,843 $127,146 $408,900

Other ZIP codes overlapping St. John

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

ZIP codes overlapping St. John
ZIP City Type Population Median income Median home
46303 Cedar Lake , IN Standard 17,680 $84,211 $293,500
46307 Crown Point , IN Standard 71,673 $107,800 $324,100
46311 Dyer , IN Standard 23,321 $116,652 $331,600
46375 Schererville , IN Standard 24,188 $93,160 $315,400

Map of St. John ZIP codes

46373

The ZIP codes of St. John, 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 St. John

The nearest larger towns are Schererville (29,701 people, 3.3 mi), Crown Point (34,393 people, 6.7 mi) and Highland (23,680 people, 7.3 mi).

Towns near St. John
TownPopulationDistance
Schererville 29,701 3.3 mi
Dyer 16,400 4.4 mi
Cedar Lake 15,295 5.0 mi
Sauk Village, IL 9,678 6.3 mi
Griffith 16,273 6.4 mi
Crown Point 34,393 6.7 mi
Lynwood, IL 9,083 7.0 mi
Highland 23,680 7.3 mi
Munster 23,733 7.5 mi
Merrillville 36,476 8.0 mi
Steger, IL 9,418 8.0 mi
Crete, IL 8,386 8.1 mi
South Chicago Heights, IL 3,907 9.2 mi
Lansing, IL 28,284 9.4 mi

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

Cite this page

zipcodes.pro. “St. John, IN ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/in/st-john

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