Niwot Post Office

150 Murray St, Niwot, CO 80544

Contact Numbers:

Phone: 303-652-2309
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Monday-Friday 8:30am - 5:00pm
Saturday 8:30am - 11:30am
Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 8:30am - 4:30pm
Saturday 8:30am - 11:30am
Sunday Closed

Pickup Services Hours

Monday-Friday 8:30am - 5:00pm
Saturday 8:30am - 11:30am
Sunday Closed

Lobby Hours

Monday-Sunday 12:01am - 11:59pm

PO Box Access Hours

Monday-Sunday 12:01am - 11:59pm

Last Collection Times

Monday-Friday 5:00pm
Saturday 11:30am
Sunday Closed

Global Express Guaranteed® Hours

Monday-Friday 8:30am - 5:00pm
Saturday 8:30am - 11:30am
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
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Global Express Guaranteed®
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Priority Mail International®

Visit our Links Page for Change of Address, Hold Mail/Stop Delivery, PO Boxes™ rentals and fees, Rates on Postage Stamps and Freight/Shipping, Holidays, Bulk Mail, Money Orders, and Available Jobs.

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

Nearby Post Offices:

Hygiene
11830 N 75th St
3.4 miles away

Longmont
201 Coffman St
3.7 miles away

Valmont
2995 55th St
3.7 miles away

High Mar
4985 Moorhead Ave
5.3 miles away

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