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Visit your local Post Office™ at 101 W Holly St to find everything you need to send mail and ship packages. Explore our other products and services like money orders, Post Office™ boxes, passports, gift cards, and more
For a small town this post office is busy they do make mistakes but how much Sidney has grown it’s understandable I feel they take care of the mail the best they can and customer service is always good
TW
Treydan Wipf
Dec 9, 2025
4.0
Personally have never had any problems. Packages do arrive quite late into the day (7PM) which is a mild annoyance but I'm sure it's just a staffing issue.
VD
Vickie Dore
Aug 16, 2024
4.0
Fast, courteous, & knowledgeable staff.
BC
bret croucher
Mar 9, 2014
1.0
of all the post office places ive ever been to Sidney,mt is by far the worst,they must not drug test here. When you try to change your address, they send your mail to the person who left your house for over a year now, and when you ask them about it they are rude and don't even try to fix the problem. We need lower letters to grade the Sidney post office. They are pathetic to say the least. My advise is to get a P.O. Box in glendive
Frequently Asked Questions About United States Postal Service
Can I get a passport application at this Post Office?
Yes, Thousands of Post Offices™ accept first-time passport applications for the U.S. Department of State. Most of those locations can also take your passport photo. Please complete and print your passport application form before you apply.
Is an appointment needed for passport services?
Most Post Offices that offer passport services have set hours, and you'll need to schedule an appointment using our online scheduler. We also offer limited Passport walk-in hours at select locations.
Does this location take the photo needed for passports?
For first-time passport and photo services, please make an appointment using our online scheduler.
What is the cost to take a passport photo?
The current fee for a passport photo at USPS is $15.
When does this location do walk-in passports?
We offer limited Passport walk-in hours at select locations.
Can I get a PO Box online?
Yes, you can search for available PO Boxes and reserve one online at https://www.usps.com/manage/po-boxes.htm. The process is quick and secure, and you'll receive instructions for completing your setup in person.
How much is a small PO Box?
PO Box prices vary by location. You can check exact pricing for your area by visiting https://www.usps.com/manage/po-boxes.htm and entering your ZIP Code.
Can you get to the PO Boxes in the lobby after hours?
Most USPS locations offer 24/7 access to PO Boxes in the lobby. Access hours may vary by location, so check with your local Post Office for specific lobby hours.
How can I get a PO Box?
You can apply for a PO Box online or in person at your local Post Office. Just bring two valid forms of ID and your completed application if applying in person. To start online, visit https://www.usps.com/manage/po-boxes.htm.
What time can I check my PO Box weekly and on weekends?
You can check your PO Box during lobby hours, which often include extended hours or 24/7 access. Weekend access may vary. Check with your local Post Office for exact times.
What services can I find at the United States Postal Service at 101 W Holly St?
You can send mail and ship packages, get money orders, rent Post Office™ boxes, apply for passports, purchase gift cards, and more.
Can I apply for a U.S. passport at this Post Office location?
Yes, this Post Office accepts first-time U.S. passport applications and offers passport photo services by appointment.
Do I need an appointment for passport services at this location?
Most passport services require an appointment made through the online scheduler, though limited walk-in hours are available at select locations.
What are the operating hours for the United States Postal Service at 101 W Holly St?
The Post Office is open Monday through Friday from 9:00 AM to 4:45 PM, Saturdays from 9:00 AM to 11:00 AM, and is closed on Sundays.
How can I reserve a PO Box at this Post Office?
You can search for and reserve a PO Box quickly and securely online, then complete the setup in person at this location.
What nearby dining options are available if I visit the Post Office?
Nearby dining includes Domino's Pizza, Burger King, The Coffee Stop, Rodiron Grill, Silver Junction Coffee, and Checkers Headquarters Office, offering various food choices before or after your visit.
Are there any nearby coffee shops where I can relax after visiting the Post Office?
Yes, The Coffee Stop and Silver Junction Coffee are nearby coffee shops perfect for a relaxing break after your postal errands.
Can I access financial services near the United States Postal Service location?
Yes, the Richland Federal Credit Union is nearby, offering ATM and other financial services convenient for postal customers.
What options are there for lodging near the Sidney Post Office?
Candlewood Suites Sidney and Holiday Inn Express and Suites Sidney are nearby hotels offering convenient accommodation options.
How do nearby transportation or postal facilities help customers visiting this Post Office?
Nearby related postal services like UPS Access Point location and other Post Offices provide additional shipping and mailing options for customers in the area.