Waterloo, IL ZIP Codes, Coordinates & Counties
Waterloo, Illinois has 1 ZIP code in Monroe county. The approximate center of Waterloo is 38.311, -90.152. Waterloo has about 73,977 known street addresses.
ZIP codes in Waterloo, IL
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 62298 | Monroe | 38.311 | -90.152 |
Counties Waterloo spans
Monroe
Most common streets in Waterloo
D, G, Lakeview, Martini, Country Club, C, 4th, Moore, Bluff, Church
Frequently asked questions
What ZIP codes are in Waterloo, IL?
Waterloo, Illinois has 1 ZIP code, ranging from 62298 to 62298. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Waterloo, IL in?
Waterloo is in Monroe county.
What are the latitude and longitude of Waterloo, IL?
The approximate center of Waterloo, Illinois is latitude 38.311, longitude -90.152. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Waterloo, IL have?
Waterloo has 1 ZIP code.
How many addresses are in Waterloo, IL?
Waterloo, Illinois has about 73,977 known street addresses in the sthan.io US address database.
What are the most common streets in Waterloo, IL?
Some of the most common street names in Waterloo are D, G, Lakeview, Martini, Country Club, C.
What cities are near Waterloo, IL?
Cities near Waterloo include Columbia (9 mi), Fults (9 mi), Smithton (9 mi), Valmeyer (9 mi), Hecker (9 mi).
Cities near Waterloo
Columbia, IL (9 mi) Fults, IL (9 mi) Smithton, IL (9 mi) Valmeyer, IL (9 mi) Hecker, IL (9 mi) Millstadt, IL (11 mi) Renault, IL (11 mi) Red Bud, IL (11 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database