United States Postal Service
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Columbia has three post offices. This one, located across from the Columbia Mall in the American City building, is a full-service post office with post office boxes and a small teller/counter operation. Because it's located in downtown Columbia, the post office is frequently busy and congested.
10227 Wincopin Cir, Columbia, MD 21044
- Fax: 410-381-2469
- Accessibility Details: Level Entrance
- Hours: By appointment.
- Hours: Mon - Fri, 9am -1pm; 2pm - 5pm; Sat, 9:30am - noon
- Accessible: yes