Saint John, IN ZIP Codes, Coordinates & Counties
Saint John, Indiana has 1 ZIP code in Lake county. The approximate center of Saint John is 41.448, -87.469. Saint John has about 111,780 known street addresses.
ZIP codes in Saint John, IN
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 46373 | Lake | 41.448 | -87.469 |
Counties Saint John spans
Lake
Most common streets in Saint John
Thiel, 93rd, Wicker, 92nd, 85th, 91st, 101st, 90th, 107th, 103rd
Frequently asked questions
What ZIP codes are in Saint John, IN?
Saint John, Indiana has 1 ZIP code, ranging from 46373 to 46373. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Saint John, IN in?
Saint John is in Lake county.
What are the latitude and longitude of Saint John, IN?
The approximate center of Saint John, Indiana is latitude 41.448, longitude -87.469. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Saint John, IN have?
Saint John has 1 ZIP code.
How many addresses are in Saint John, IN?
Saint John, Indiana has about 111,780 known street addresses in the sthan.io US address database.
What are the most common streets in Saint John, IN?
Some of the most common street names in Saint John are Thiel, 93rd, Wicker, 92nd, 85th, 91st.
What cities are near Saint John, IN?
Cities near Saint John include Dyer (2 mi), Schererville (3 mi), Cedar Lake (5 mi), Griffith (6 mi), Crete (7 mi).
Cities near Saint John
Dyer, IN (2 mi) Schererville, IN (3 mi) Cedar Lake, IN (5 mi) Griffith, IN (6 mi) Crete, IL (7 mi) Highland, IN (7 mi) Merrillville, IN (7 mi) Munster, IN (7 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database