Thornton Post Office

8804 Washington St, Thornton, CO 80229

Contact Numbers

Phone: 303-227-7376
Fax: 303-287-8679
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours







Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

Monday 5:30pm
Tuesday 5:30pm
Wednesday 5:30pm
Thursday 5:30pm
Friday 5:30pm
Saturday 4:30pm
Sunday Closed

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

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • 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
  • Sure Money
  • Street Parking

Visit our Links Page for links to 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:

North Pecos
1411 Cortez St
1.5 miles away

Northview
850 W 112th Ave
1.9 miles away

Northglenn
11887 Washington St
2.2 miles away

Westminster
3051 W 105th Ave
2.3 miles away

Reviews

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package from m pillow was told at post office awaiting delivery still not received, the my pillow is at post office according to their customer services, i still have bot been delivered as of today. Could you please check on this and let me know if you do actually have it there.
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Have tried to call Thornton CO post office for 3 months (303-227-7376), nobody ever answers and it just rings and rings until it cuts to a sound similar to a fax machine. Today, I tried to call the 1-800-275-8777 number to see if they could help me out. After going through the lengthy automated system, it told me I would be on hold for 7-11 minutes. I am currently sitting at 20 minutes. I want my postal carrier to know that "community" post boxes have larger openings on the carrier's side than they do on the resident's side and that I often can't get my mail out because it is just shoved into the receptacle. I currently have a small box stuck in my post box because it's too wide to be removed. Last month I had to mangle and mash a similar package in order to get it out of the post box. At 22:47, the 800-number finally said, "please continue to hold." At this rate, it's obvious that the notion of "customer service" does not apply to the United States Post Office. I don't think I should have to take time off of work to make contact with the post office to get such concerns taken care of. I have now been on hold longer than 25:30. I am hanging up with no resolution to this problem.
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Alllllll of my mail doesn't get delivered !!! Not one piece of it. It's the holidays and this place won't answer their phone nor do they deliver my mail properly ... it's horrible not being able to rely on the postal service for my bills and cards from loved ones. Thank you for nothing.
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