United States Postal Service

2.5
99 reviews
Person picking up a package from USPS smart lockers

About

Post OfficeShipping ServiceCargo ServicePackaging Supply StoreLogistics ServiceMoney Order ServiceVisa and Passport OfficeUnited States Postal Service
Visit your local Post Office™ at 3040 78th Ave SE 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

Location

United States Postal Service
3040 78th Ave SE, Mercer Island, WA
98040, United States

Hours

Reviews

2.5
99 reviews
5 stars
32
4 stars
3
3 stars
3
2 stars
8
1 star
53
  • BB
    BLANK3T
    Dec 23, 2025
    1.0
    never answers phones during the day, will just hang up
  • JL
    Jong Lee
    Dec 17, 2025
    4.0
    Spacious parking and chill vibe area. Also has 24 hour open kiosk.
  • KP
    Krish Perumal
    Dec 10, 2025
    5.0
    Excellent and timely service
  • AT
    Alexi Trinh
    Nov 5, 2025
    5.0
    I went to the Mercer Island Post Office today to send out a USPS Priority Envelope; the clerk, Hien, was very accommodating in helping me mail it. I'm sure for most, a trip to the Post Office is a mundane one, yet, if you think about it, come hail, rain, sleet, snow, apocalyptic lightning storm, or shine, our USPS comes through, and that's nothing short of Amazing.
  • WJ
    Whiskey Jack
    Oct 18, 2025
    1.0
    DOES NOT DO FINGERPRINTING ON SATURDAYS DESPITE WHAT IS ON THEIR WEBSITE. Instead refers you to some private company that charges an arm and a leg for fingerprinting, it feels like I’m getting hustled to be honest.

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.