There are 13 Post Offices in Lake County, California, serving a population of 64,095 people in an area of 1,257 square miles. There is 1 Post Office per 4,930 people, and 1 Post Office per 96 square miles.
In California, Lake County is ranked 18th of 58 counties in Post Offices per capita, and 27th of 58 counties in Post Offices per square mile.
Find Lake County, California post offices and USPS mailing boxes.
Clearlake Oaks Post Office 13280 Highway 20 Clearlake Oaks, CA
Clearlake Park Post Office 13417 Lakeshore Drive Clearlake, CA
Clearlake Post Office 14500 Olympic Drive Clearlake, CA
Cobb Post Office 16595 Highway 175 Cobb, CA
Finley Post Office 1904 Big Valley Road Finley, CA
Glenhaven Post Office 9530 Highway 20 Glenhaven, CA
Kelseyville Post Office 5500 Gaddy Lane Kelseyville, CA
Lakeport Post Office 1151 11th Street Lakeport, CA
Lower Lake Post Office 16165 Main Street Lower Lake, CA
Lucerne Post Office 6054 Highway 20 Lucerne, CA
Middletown Post Office 21177 Calistoga Road Middletown, CA
Nice Post Office 3964 Highway 20 Nice, CA
Upper Lake Post Office 9435 Main Street Upper Lake, CA
Lake County Post Offices are branch locations of the customer service postal facilities of the United States Postal Service (USPS) in Lake County, CA. The USPS is an independent agency of the federal government that provides mail and package delivery services to all states and territories. Lake County post offices are supported entirely by revenues generated by their own operations. Operational authority over the USPS lies with a Board of Governors and rate setting authority falls under the Postal Rate Commission.You may contact the Post Office for questions about: