Post Offices

Post Offices in & near Denver, Colorado. Operating hours, locations, phone/fax number, services information.

Capitol Hill Annex Post Office

Capitol Hill Annex Post Office in Denver, Colorado on N Downing St. Operating hours, phone number, services information, and other locations.

Address: 1551 N Downing St, Denver, CO 80218
Phone: 303-860-7954
Fax: 303-860-8330
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Lobby Hours

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

Last Collection Times

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

Denver Post Office

Address: 951 20th St, Denver, CO 80202
Phone: 303-296-2071
Fax: 303-295-3727
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Mile High Post Office

Address: 450 W 14th Ave, Denver, CO 80204
Phone: 303-571-0796
Fax: 303-592-9125
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Cherry Creek Post Office

Address: 201 Columbine St Ste 150, Denver, CO 80206
Phone: 303-355-7160
Fax: 303-320-1468
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

South Denver Post Office

Address: 225 S Broadway, Denver, CO 80209
Phone: 303-871-0410
Fax: 303-698-2948
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Sunnysid Post Office

Address: 1766 W 46th Ave, Denver, CO 80211
Phone: 303-433-6211
Fax: 303-477-3805
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457