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Visit your local Post Office™ at 1057 Main 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
I absolutely so appreciate this post office, and Ken who is the fellow behind the counter. Yes the house must be paid attention to. The service is so kind and engaging.
MB
Margaret Beaulac
Sep 24, 2025
5.0
We are so lucky to have this post office and those who work there. In the 35 years that we have used this post office it has always been a pleasant fun experience.
PE
Penny Evans
Mar 11, 2025
5.0
Always helpful and kind.
DL
Darcy Locke
Jul 20, 2024
1.0
Everybody working there is very nice but the hours are ridiculous. The whole building locks down so you can't even check your mailbox. Just ridiculous.
DD
Debbie
May 22, 2022
1.0
I mailed and re-mailed, an envelope to MDI - twice it was returned as "undeliverable as addressed". Seriously, was it really that difficult to read the popular road name, written in cursive? I have re-mailed the envelope again with street name printed above cursive writing. Third times the charm!?
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.
Where is the United States Postal Service located in Mount Desert?
The United States Postal Service is located at 1057 Main St, Mount Desert, ME 04660.
What are the regular business hours for this Post Office?
Monday to Friday, it is open from 8:30 AM to 12:00 PM and 2:00 PM to 4:30 PM; Saturday from 8:30 AM to 11:30 AM; closed on Sundays.
Can I get passport application and photo services at this Post Office?
Yes, you can apply for a first-time U.S. passport and get your passport photo taken here, but you need to schedule an appointment for photo services.
Is an appointment required for passport services?
Yes, for most passport services including photos, you need to book an appointment using the online scheduler; limited walk-in hours may be available.
How much does it cost to have a passport photo taken at this Post Office?
The current fee for a passport photo at USPS is $15.
Can I rent a PO Box at this location?
Yes, you can apply for and reserve PO Boxes online or in person at the Post Office.
What are the access hours for PO Boxes at this Post Office?
Most PO Boxes have 24/7 lobby access; however, exact lobby hours may vary, so check with the location.
What nearby places can I visit around the Post Office at 1057 Main St?
Nearby you can find Bar Harbor Bank & Trust for banking needs, several gas stations such as Shell, and dining options like SUBWAY.
How can nearby places help me when visiting the Post Office?
You can conveniently combine errands: withdraw cash at Bar Harbor Bank & Trust, fill up your tank at Shell or On the Run, or grab a quick meal at SUBWAY before or after your postal visit.
Are there any local attractions close to this Post Office that I can explore?
Yes, nearby attractions include the Mount Desert Island Historical Society museum and the Gallery at Somes Sound art gallery, great for a cultural visit.