Castalia Post Office

206 E Greene St, Castalia, IA 52133

Contact Numbers

Phone: 563-567-8416
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 4:00pm
Tuesday 4:00pm
Wednesday 4:00pm
Thursday 4:00pm
Friday 4:00pm
Saturday 4:15pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 10:15am - 1:45pm
Tuesday 10:15am - 1:45pm
Wednesday 10:15am - 1:45pm
Thursday 10:15am - 1:45pm
Friday 10:15am - 1:45pm
Saturday Closed
Sunday Closed

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

  • Bulk Mail Acceptance
  • Burial Flags
  • Business Line
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • 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:

200 E Main St
3.8 miles away

146 W Tilden St
4.3 miles away

319 Mill St
4.5 miles away

238 Center St
6.4 miles away


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Can i just pick up my mail? We get ours so late in the day, now there's a little snow, we have no had mail in 2 days. Im expecting some things other family members in Decorah got yesterday. If i can just pick it up, vs endless wondering that would be great.

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