There are 12 US Post Offices in Linn County serving a total of 60,011 residents equating to 5,001 residents per post office. It's estimated that approximately 95,784 packages are handled across the 12 county post offices annually. Linn County is a county located in the U.S. state of Oregon. As of the 2010 census, the population was 116,672. The county seat is Albany. The county is named in honor of Lewis F. Linn, a U.S. Senator from Missouri who advocated the American settlement of the Oregon Country. Linn County comprises the Albany, OR Metropolitan Statistical Area, which is included in the Portland-Vancouver-Salem, OR-WA Combined Statistical Area. It is located in the Willamette Valley. In 2010, the center of population of Oregon was located in Linn County, near the city of Lyons."