| Clearlake Post Office |
14500 Olympic Dr, Clearlake, CA 95422 |
| Clearlake Oaks Post Office |
13280 E Highway 20, Clearlake Oaks, CA 95423 |
| Clearlake Park Post Office |
13417 Lakeshore Dr, Clearlake Park, CA 95424 |
| Cobb Post Office |
16595 Highway 175, Cobb, CA 95426 |
| Finley Post Office |
1904 Big Valley Rd, Finley, CA 95435 |
| Glenhaven Post Office |
9530 Highway 20, Glenhaven, CA 95443 |
| Kelseyville Post Office |
5500 Gaddy Ln, Kelseyville, CA 95451 |
| Lakeport Post Office |
1151 11th St, Lakeport, CA 95453 |
| Lower Lake Post Office |
16165 Main St, Lower Lake, CA 95457 |
| Lucerne Post Office |
6054 E Highway 20, Lucerne, CA 95458 |
| Middletown Post Office |
21177 Calistoga Rd, Middletown, CA 95461 |
| Nice Post Office |
3964 E State Hwy 20, Nice, CA 95464 |
| Upper Lake Post Office |
9435 Main St, Upper Lake, CA 95485 |
