Clearlake Oaks Post Office

13280 E Highway 20, Clearlake Oaks, CA 95423

Contact Numbers

Phone: 707-998-3544
Fax: 707-998-3544
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 3:30pm
Tuesday 3:30pm
Wednesday 3:30pm
Thursday 3:30pm
Friday 3:30pm
Saturday 9:00am
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
  • Burial Flags
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Sure Money
  • Street Parking

Visit our Links Page for links to 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:

Clearlake Park
13417 Lakeshore Dr
2.4 miles away

Clearlake
14500 Olympic Dr
2.7 miles away

Glenhaven
9530 Highway 20
2.8 miles away

Lower Lake
16165 Main St
5.1 miles away

Reviews

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I have had nothing but surliness from my carrier in Clearlake Oaks, CA 95423. Her name is Kelly and she is unwilling to bring packages to our homes. My road is less than 1/4 block long, there are four houses all bunched together. She will leave our packages on top of the mailbox row if they can't be crammed inside. My neighbors and I have all had items stolen by kids who walk along the main road to our development, I'm tired of it.
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