Mount Prospect, IL ZIP Code
Mount Prospect, Illinois has one ZIP code: .
Mail addressed to Mount Prospect covers nearby places too.
Where the 60056 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Mount Prospect village limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Mount Prospect
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
ZIP codes from nearby towns that reach into Mount Prospect
- 60005, mailing town Arlington Heights, covers 3 percent of Mount Prospect
Why your mail may say Mount Prospect when you live outside it
A letter addressed to Mount Prospect can go to a home outside the village limits, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of Mount Prospect use 60005, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Cook County property records show which city you are in.
Mount Prospect ZIP code questions
What is the main ZIP code for Mount Prospect?
60056, the ZIP code of the main Mount Prospect post office at 300 W Central Rd.
What county is Mount Prospect in?
Cook County.
ZIP codes for towns near Mount Prospect
More towns near Mount Prospect: Palatine, Northbrook, Buffalo Grove, Niles, Schaumburg, Addison, Skokie, Highland Park, Hoffman Estates.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections