ZIP codes
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St. John, IN Demographics & ZIP Codes
St. John, Indiana demographics and median household income by ZIP code (in Lake County) — 1 ZIP codes — population 18,509 — median income $123,203 — avg. home value $375,300. Compare income, housing, and population across ZIP codes on US5.
Population
18,509
Median household income (avg.)
$123,203
164% of U.S. median
Average home value
$375,300
108% of U.S. median
Average rent
$887
76% of U.S. median
Median age (avg.)
43.5
St. John demographics
St. John, Indiana covers 1 ZIP code primarily in Lake County, with a combined ZIP-area population of about 18,509.
Across ZIP codes with age data, the average median age is about 43.5 years.
Median household income in St. John
The average median household income across ZIP codes in St. John, Indiana is about $123,203 — about 72% above the IN ZIP average ($71,483), and about 64% above the U.S. median ($75,149).
The highest median household income among listed ZIPs is about $123,203 in 46373.
Housing in St. John
For housing in St. John, Indiana, the average median home value is about $375,300 and the average median rent is about $887.
The most populous ZIP in this set is 46373 (about 18,509 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in St. John
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 46373 | St. John | Lake County | IN | 18,509 | $123,203 | $375,300 |
Frequently asked questions
What are the demographics of St. John?
St. John, Indiana has a combined ZIP-area population of about 18,509 across 1 ZIP codes (primarily Lake County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in St. John?
The average median household income across ZIP codes in St. John, Indiana is about $123,203, about 72% above the state ZIP average ($71,483), and about 64% above the U.S. median ($75,149). Average median home value is about $375,300.
How many ZIP codes are in St. John?
St. John, Indiana includes 1 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for St. John?
This page lists ZIP codes in St. John, Indiana with population, median household income, and home value. Select a ZIP for a full demographics profile.