Monmouth, IL ZIP Codes, Coordinates & Counties
Monmouth, Illinois has 1 ZIP code in Warren county. The approximate center of Monmouth is 40.924, -90.648. Monmouth has about 108,698 known street addresses.
ZIP codes in Monmouth, IL
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 61462 | Warren | 40.924 | -90.648 |
Counties Monmouth spans
Warren
Most common streets in Monmouth
6th, 2nd, 3rd, 11th, 5th, Broadway, 4th, 8th, D, 9th
Frequently asked questions
What ZIP codes are in Monmouth, IL?
Monmouth, Illinois has 1 ZIP code, ranging from 61462 to 61462. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Monmouth, IL in?
Monmouth is in Warren county.
What are the latitude and longitude of Monmouth, IL?
The approximate center of Monmouth, Illinois is latitude 40.924, longitude -90.648. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Monmouth, IL have?
Monmouth has 1 ZIP code.
How many addresses are in Monmouth, IL?
Monmouth, Illinois has about 108,698 known street addresses in the sthan.io US address database.
What are the most common streets in Monmouth, IL?
Some of the most common street names in Monmouth are 6th, 2nd, 3rd, 11th, 5th, Broadway.
What cities are near Monmouth, IL?
Cities near Monmouth include Gerlaw (6 mi), Kirkwood (7 mi), Cameron (8 mi), Little York (9 mi), Alexis (11 mi).
Cities near Monmouth
Gerlaw, IL (6 mi) Kirkwood, IL (7 mi) Cameron, IL (8 mi) Little York, IL (9 mi) Alexis, IL (11 mi) Berwick, IL (12 mi) Biggsville, IL (12 mi) Smithshire, IL (13 mi)
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View the API →Last updated: June 2026 · Data: sthan.io US address database