New Castle Post Office

112 W Main St, New Castle, CO 81647

Contact Numbers

Phone: 970-984-2213
Fax: 970-984-3808
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 4:30pm
Tuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 12:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 9:00am - 3:00pm
Tuesday 9:00am - 3:00pm
Wednesday 9:00am - 3:00pm
Thursday 9:00am - 3:00pm
Friday 9:00am - 3:00pm
Saturday Closed
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 Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Packaged Stamps
  • 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:

116 Lyon Blvd
4.5 miles away

Glenwood Springs
113 9th St
8.3 miles away

Glenwood Springs 2
113 9th St
8.3 miles away

Rifle Annex
818 Taughenbaugh Blvd Ste 106
10.0 miles away


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Ent overnight pkg from KY to NC Co.$30.00 was fee to have it delivered by 3 on Sat. It's Tues. Still no pkg. 138 n 7th


I recently sent a package to: Stephen Huck 436 Wagon Wheel Cir NEW CASTLE, CO United States It was put in the WRONG mailbox! I have just re sent another package. I am hoping that the mail carrier will put it in the correct box this time! Thank you! Nell 9400109206094057230832 Status Delivered November 4, 2019 at 3:56 pm Delivered, In/At Mailbox NEW CASTLE, CO 81647

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