There are 13 US Post Offices in Klamath County serving a total of 34,598 residents equating to 2,661 residents per post office. It's estimated that approximately 55,222 packages are handled across the 13 county post offices annually. Klamath County (/\u02c8kl\u00e6m\u0259\u03b8/ KLAM-\u0259th) is a county located in the U.S. state of Oregon. As of the 2010 census, the population was 66,380. The county seat is Klamath Falls. The county was named for the Klamath, the tribe of Native Americans living in the area at the time the first European explorers entered the region. Klamath County comprises the Klamath Falls, OR Micropolitan Statistical Area."