Clayton Post Office

12 Railroad Ave, Clayton, DE 19938

Contact Numbers

Phone: 302-653-7376
Fax: 302-659-3739
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 6:00am - 5:30pm
Tuesday 6:00am - 5:30pm
Wednesday 6:00am - 5:30pm
Thursday 6:00am - 5:30pm
Friday 6:00am - 5:30pm
Saturday 6:00am - 12:30pm
Sunday Closed

Last Collection Times

Monday 4:30pm
Tuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 12:00pm
Sunday Closed

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

  • Burial Flags
  • Business Line
  • 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
  • Sure Money
  • Street 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:

13 S Market St
1.1 miles away

24 Frazier St
2.9 miles away

262 E Main St
3.5 miles away

400 Main St
4.7 miles away


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The only complaint I have is that the mailbox is so full when I can only get there on Sat.that it's hard to get it a ll out. I would like the workers not to stuff it so full.


I understand that having residents in the center of town pick up their mail at the post office is a cost saving measure, but I, for one, leave for work before the post office is open and return to the area well after the post office closes. Typically, my only day off is Sunday, which doesn't help at all as far as picking up my mail. It's frustrating. Oh, and I was charged for my P.O. box because the other renter at my address already has one.


I am very discussed with the postal service we receive on Hopewell Dr Clayton De19938 My neighbors and I always have the wrong mail we are always having to switch with each other so we have the rite mail There has been mailboxes hit by postman’s truck and broke I had certified letter that where never delivered I have watch postman put mail in box and go get it to find certified letter thing saying hevstop and no one home while I was standing rite on my deck he never approached the house to make an attempt And today 07-12-18 I had a package delivered My daughter watched him just throw it over the gate on to the deck luckily didn’t break but enough is enough I would hope that something may done about this but I know several people that have complained and nothing but one mail box fixed I have gone to office in Clayton and complained but it just keeps happening I like to know what it takes Hopefully someone will read this that cares about their job People at office don’t answer phone or return calls So I guess we will see


It said my pkg was delivered but it wasn't mine..where is my pkg???

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