Marshallton Post Office

3434 Old Capitol Trl, Wilmington, DE 19808

Contact Numbers

Phone: 302-998-1168
Fax: 302-998-8054
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 6:00am - 5:15pm
Tuesday 6:00am - 5:15pm
Wednesday 6:00am - 5:15pm
Thursday 6:00am - 5:15pm
Friday 6:00am - 5:15pm
Saturday 6:00am - 3:30pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 2:00pm
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • Burial Flags
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

1704 W Newport Pike
0.6 mile away

3801 Kennett Pike Ste A101
2.3 miles away

100 McMullen Ave
2.4 miles away

Lancaster Ave
1500 Lancaster Ave
2.5 miles away


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Our Marshallton post office sucks, especially if you need help by phone! They are rude, and don't really offer help for your problem!, and that's if they don't put you on hold, and they never come back on, and when you call back, they don't answer the phone! They constantly give us another person's mail, and we get a lot of ripped packages from them. Mail goes missing all the time. Money orders, and statements get lost quite often, which is bad, because you don't know if another person has your mail, and your personal info. I am fed up with the problems they have caused me! Now they are sending back credit card statements to the company, and the address is correct, and they offered me no explanation for it. It's happened twice already with the same company, two months in a row! We had to send in a money order the first time this happen without the statement, and it got lost, and we had to pay again, and pay to start a search to find out what happen to the money order. We had to do it again this month, and I hope nothing happens to it. This post office has a lot of problems like when my package was brought to a different address, and somebody signed for it. When they showed me the signature, it wasn't mine, but they insisted we have your signature, and that's the end of it. They were so rude, even when I told them it wasn't my signature. I complained, and nothing was ever done about it. I lost a very valuable collectors item because of their mistake! They have.a lot of problems at this post office that need to change! If I have something important to do, I go to the Lantana Square post office, I don't trust our post office at all, and they are so nice, and I feel much more comfortable going there. I would not trust our post office with anything important I had to mail! If I had to rate them, it would be a negative 1, because I feel this post office needs a complete makeover, to the rude employees, and better mail people, to extreme change in their customer service, especially by phone!!

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