Ottawa, IL ZIP Codes, Coordinates & Counties
Ottawa, Illinois has 1 ZIP code in LaSalle county. The approximate center of Ottawa is 41.373, -88.863. Ottawa has about 135,363 known street addresses.
ZIP codes in Ottawa, IL
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 61350 | LaSalle | 41.373 | -88.863 |
Counties Ottawa spans
LaSalle
Most common streets in Ottawa
Main, Columbus, Madison, Washington, Jefferson, Lafayette, Jackson, Adams, 13th, 12th
Frequently asked questions
What ZIP codes are in Ottawa, IL?
Ottawa, Illinois has 1 ZIP code, ranging from 61350 to 61350. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Ottawa, IL in?
Ottawa is in LaSalle county.
What are the latitude and longitude of Ottawa, IL?
The approximate center of Ottawa, Illinois is latitude 41.373, longitude -88.863. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Ottawa, IL have?
Ottawa has 1 ZIP code.
How many addresses are in Ottawa, IL?
Ottawa, Illinois has about 135,363 known street addresses in the sthan.io US address database.
What are the most common streets in Ottawa, IL?
Some of the most common street names in Ottawa are Main, Columbus, Madison, Washington, Jefferson, Lafayette.
What cities are near Ottawa, IL?
Cities near Ottawa include Utica (7 mi), Wedron (7 mi), Marseilles (9 mi), Grand Ridge (10 mi), Serena (10 mi).
Cities near Ottawa
Utica, IL (7 mi) Wedron, IL (7 mi) Marseilles, IL (9 mi) Grand Ridge, IL (10 mi) Serena, IL (10 mi) La Salle, IL (11 mi) Oglesby, IL (11 mi) Troy Grove, IL (13 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database