Johnstown Post Office

121 Castle Pines Ave, Johnstown, CO 80534

Contact Numbers

Phone: 970-587-4246
Fax: 970-587-0140
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

Passport Appointment Hours*

Monday 9:00am - 12:00pm, 2:00pm - 4:00pm
Tuesday 9:00am - 12:00pm, 2:00pm - 4:00pm
Wednesday 9:00am - 12:00pm, 2:00pm - 4:00pm
Thursday 9:00am - 12:00pm, 2:00pm - 4:00pm
Friday 9:00am - 12:00pm, 2:00pm - 4:00pm
Saturday Closed
Sunday Closed

  • Visit our Passport FAQ page for a complete overview of what to bring, what you need to know, and how long it will take.
  • You will need two forms of Identification with copies.
  • A passport quality photo. Available at location.
  • The appropriate application form printed and filled out, and the required fee for applying or renewing.
  • You can find up to date costs, information, and forms at the State Departments Travel Site

*An appointment is required to apply for or renew US Passports. Please Call or schedule online.

Bulk Mail Acceptance Hours

Monday 9:00am - 11:30am, 2:15pm - 4:00pm
Tuesday 9:00am - 11:30am, 2:15pm - 4:00pm
Wednesday 9:00am - 11:30am, 2:15pm - 4:00pm
Thursday 9:00am - 11:30am, 2:15pm - 4:00pm
Friday 9:00am - 11:30am, 2:15pm - 4:00pm
Saturday Closed
Sunday Closed

  • 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)
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking
  • Passport Appointment Hours

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:

1009 Broad St
2.0 miles away

350 Welker Ave
5.5 miles away

Win Carrier Annex
1070 Diamond Valley Dr Ste 500
5.5 miles away

301 Main St
5.6 miles away


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Us-8873623 Person text to my phone , said I had a package coming in to me today , had happened a few days ago also, deleted text last time , this time when sent was ask to do a survey then was told my phone had a virus. The phone number on that text was 347-406-1019 Please report , they are using post office for hurting people early hours it was 6am Appreciate this reported , Thanks


Yesterday, I received an informed delivery text verification of a package that was said to have been delivered Feb 05 item: 9361 2896 9309 0357 1301 65 11:47 AM Delivered, In/At Mailbox JOHNSTOWN,CO 80534 When I attempted to pick this item up from the parcel locker, I was not able to because no key was left in my mailbox to open the parcel locker. Effectively, this was not delivered because of the missing access to the item.

* is not a part of, or affiliated with, the official United States Postal Service (USPS).