Clearlake Post Office

This Office has CLOSED permanently. Please check nearby locations below.NOTICE: The Postal Service is an essential government service, and will remain open wherever possible.

14500 Olympic Dr, Clearlake, CA 95422

Contact Numbers

Phone: 707-994-6790
Fax: 707-994-9746
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Carrier Facility: This location is for mail processing only. For retail services, please use one of the nearby locations below.

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:

Lower Lake
16165 Main St
2.4 miles away

Clearlake Oaks
13280 E Highway 20
2.7 miles away

9530 Highway 20
4.5 miles away

16595 Highway 175
6.5 miles away


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This Post Office is the best I've ever used. The people working behind the counter are friendly, extremely patient and even have a sense of humor. LOVE IT! One drawback is that the lobby is not 24 hrs anymore due to homeless invasion.


Hi ! Thanks for all the great service here in lake county Ca. I have been in other countries and we have it good here, still. Wonder if your on line could contain a question box, to ask such ?s as, Does your Clear Lake Ca. office ship over night's on saturday?


How much does it cost to change po boxes in same post office?

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