Casa Grande Annex Post Office

1601 Corporate Cir, Petaluma, CA 94954

Contact Numbers

Phone: 707-769-5360
Fax: 707-763-7465
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

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 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 4:00pm
Sunday Closed

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

  • Business Line
  • General Delivery
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online

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:

Petaluma
120 4th St
1.5 miles away

North Bay P and DC Finance
1150 N McDowell Blvd
2.8 miles away

Penngrove
11041 Main St
3.8 miles away

El Verano
19050 Bay St
5.3 miles away

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