About this location
Mount Greenwood Post Office is a post office in Chicago, IL. The place is listed at 3349 West 111th Street. This page collects its opening hours, contacts and services.
Where it is
The address is 3349 West 111th Street. It sits in Chicago, IL, postcode 60655.
The place sits in Chicago, IL, and the nearest streets are around 3349 West 111th Street. Coordinates are 41.6912632, -87.7053241.
Opening hours
What to expect at a post office
Typically, visitors are greeted upon arrival and directed to a counter or queue area. They approach an employee when ready to transact.
Typically, a post office offers standard postal services such as letter and package delivery. Visitors can usually purchase stamps and send international mail here.
Before you go
Typically, it is advisable to check the opening hours of a post office before visiting, as they may vary depending on the day or location.
It is useful to check in advance what payment methods are accepted at a post office, as different locations typically offer varying services and may have specific requirements for payments.
Choosing a post office in Chicago
Typically, it is useful for residents of Chicago to know that there are several post offices nearby, as they often provide convenient services and assistance with mail-related tasks.
When choosing a post office, factors typically considered include not just distance but also hours of operation and accessibility for people with disabilities.
How this page is kept current
The details on this page come from OpenStreetMap, an open map database that local people keep up to date. The listing for this place was last confirmed on 2026-06-20. Opening hours and services can change between updates, so a phone call before a long trip is the surest check.
What visitors usually check first
Visitors typically bring identification documents and stamps when visiting a post office, as these items are necessary for various services such as sending mail or applying for postal services.
Busy times and quieter hours
Typically, people avoid long queues in post offices by arriving early in the morning or late in the afternoon. They also often check online for updates on service times and delays.
If you arrive after closing
Typically, calling in advance helps ensure that the post office is open and ready to serve customers. It also allows them to check on any specific services or requirements needed for their visit.
Typically, people check nearby post offices online or via mobile apps when one is closed. They also consult maps and directories for alternative locations.