Post offices in the county of Lake, CA

Use this page to find the post offices in your county that open earliest or stay open latest. The open hours listed are for the post office's retail hours, which means the hours in which a postal service employee is available at the counter to help with mailings and other services. Oftentimes lobbies are open extended hours, and you are able to check your PO box, drop off packages, or use the self-service APC machine to buy postage. The list below is first sorted alphabetically by city, then by post office name. Street View photos of post offices are shown when available. Please contact us if you find an error, so that we can correct it.

Street View Image of Clearlake Post Office in Clearlake, CA

Clearlake Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
14500 Olympic Dr Clearlake , CA 95422-9503

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Open hours
Day Open Close
Monday 10:00 AM 5:00 PM
Tuesday 10:00 AM 5:00 PM
Wednesday 10:00 AM 5:00 PM
Thursday 10:00 AM 5:00 PM
Friday 10:00 AM 5:00 PM
Saturday 10:00 AM 12:30 PM
Sunday Closed
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Street View Image of Clearlake Oaks Post Office in Clearlake Oaks, CA

Clearlake Oaks Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
13280 E Highway 20 Clearlake Oaks , CA 95423-9904

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Open hours
Day Open Close
Monday 8:30 AM 4:30 PM
Tuesday 8:30 AM 4:30 PM
Wednesday 8:30 AM 4:30 PM
Thursday 8:30 AM 4:30 PM
Friday 8:30 AM 4:30 PM
Saturday Closed
Sunday Closed
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Street View Image of Clearlake Park Post Office in Clearlake Park, CA

Clearlake Park Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
13417 Lakeshore Dr Clearlake Park , CA 95424-7900

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Open hours
Day Open Close
Monday 8:30 AM 12:30 PM
1:00 PM 3:00 PM
Tuesday 8:30 AM 12:30 PM
1:00 PM 3:00 PM
Wednesday 8:30 AM 12:30 PM
1:00 PM 3:00 PM
Thursday 8:30 AM 12:30 PM
1:00 PM 3:00 PM
Friday 8:30 AM 12:30 PM
1:00 PM 3:00 PM
Saturday Closed
Sunday Closed
  • Stamps.com logo
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Street View Image of Cobb Post Office in Cobb, CA

Cobb Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
16595 Highway 175 Cobb , CA 95426-9900

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Open hours
Day Open Close
Monday 8:00 AM 4:30 PM
Tuesday 8:00 AM 4:30 PM
Wednesday 8:00 AM 4:30 PM
Thursday 8:00 AM 4:30 PM
Friday 8:00 AM 4:30 PM
Saturday Closed
Sunday Closed
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Street View Image of Finley Post Office in Finley, CA

Finley Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1904 Big Valley Rd Finley , CA 95435-8900

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Open hours
Day Open Close
Monday 9:00 AM 12:00 PM
12:30 PM 3:30 PM
Tuesday 9:00 AM 12:00 PM
12:30 PM 3:30 PM
Wednesday 9:00 AM 12:00 PM
12:30 PM 3:30 PM
Thursday 9:00 AM 12:00 PM
12:30 PM 3:30 PM
Friday 9:00 AM 12:00 PM
12:30 PM 3:30 PM
Saturday Closed
Sunday Closed

Phone: 707-263-4544

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Street View Image of Glenhaven Post Office in Glenhaven, CA

Glenhaven Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
9530 Highway 20 Glenhaven , CA 95443-9900

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Open hours
Day Open Close
Monday 11:15 AM 3:15 PM
Tuesday 11:15 AM 3:15 PM
Wednesday 11:15 AM 3:15 PM
Thursday 11:15 AM 3:15 PM
Friday 11:15 AM 3:15 PM
Saturday Closed
Sunday Closed
  • Stamps.com logo
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Street View Image of Kelseyville Post Office in Kelseyville, CA

Kelseyville Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
5500 Gaddy Ln Kelseyville , CA 95451-7414

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Open hours
Day Open Close
Monday 9:00 AM 4:30 PM
Tuesday 9:00 AM 4:30 PM
Wednesday 9:00 AM 4:30 PM
Thursday 9:00 AM 4:30 PM
Friday 9:00 AM 4:30 PM
Saturday Closed
Sunday Closed

Phone: 707-279-4562

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Street View Image of Lakeport Post Office in Lakeport, CA

Lakeport Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1151 11th St Lakeport , CA 95453-9917

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Open hours
Day Open Close
Monday 9:00 AM 4:30 PM
Tuesday 9:00 AM 4:30 PM
Wednesday 9:00 AM 4:30 PM
Thursday 9:00 AM 4:30 PM
Friday 9:00 AM 4:30 PM
Saturday Closed
Sunday Closed
  • Stamps.com logo
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Street View Image of Lower Lake Post Office in Lower Lake, CA

Lower Lake Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
16165 Main St Lower Lake , CA 95457-9906

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Open hours
Day Open Close
Monday 8:30 AM 4:30 PM
Tuesday 8:30 AM 4:30 PM
Wednesday 8:30 AM 4:30 PM
Thursday 8:30 AM 4:30 PM
Friday 8:30 AM 4:30 PM
Saturday Closed
Sunday Closed
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
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Street View Image of Lucerne Post Office in Lucerne, CA

Lucerne Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
6054 E Highway 20 Lucerne , CA 95458-9904

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Open hours
Day Open Close
Monday 8:30 AM 4:30 PM
Tuesday 8:30 AM 4:30 PM
Wednesday 8:30 AM 4:30 PM
Thursday 8:30 AM 4:30 PM
Friday 8:30 AM 4:30 PM
Saturday Closed
Sunday Closed
  • Stamps.com logo
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    Discounted USPS and UPS rates of up to 84%.
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Street View Image of Middletown Post Office in Middletown, CA

Middletown Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
21177 Calistoga Rd Middletown , CA 95461-9998

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Open hours
Day Open Close
Monday 9:00 AM 5:00 PM
Tuesday 9:00 AM 5:00 PM
Wednesday 9:00 AM 5:00 PM
Thursday 9:00 AM 5:00 PM
Friday 9:00 AM 5:00 PM
Saturday Closed
Sunday Closed
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
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Street View Image of Nice Post Office in Nice, CA

Nice Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
3964 E State Hwy 20 Nice , CA 95464-9903

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Open hours
Day Open Close
Monday 8:30 AM 5:00 PM
Tuesday 8:30 AM 5:00 PM
Wednesday 8:30 AM 5:00 PM
Thursday 8:30 AM 5:00 PM
Friday 8:30 AM 5:00 PM
Saturday Closed
Sunday Closed
  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
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Street View Image of Upper Lake Post Office in Upper Lake, CA

Upper Lake Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
9435 Main St Upper Lake , CA 95485-9902

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Open hours
Day Open Close
Monday 9:00 AM 4:00 PM
Tuesday 9:00 AM 4:00 PM
Wednesday 9:00 AM 4:00 PM
Thursday 9:00 AM 4:00 PM
Friday 9:00 AM 4:00 PM
Saturday Closed
Sunday Closed

Phone: 707-275-2426

  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value