There are 30 US Post Offices in Cattaraugus County serving a total of 83,430 residents equating to 2,781 residents per post office. It's estimated that approximately 133,164 packages are handled across the 30 county post offices annually. Cattaraugus County is a county located in the western part of the U.S. state of New York, with one side bordering Pennsylvania. As of the 2010 census, the population was 80,317. The county seat is Little Valley. The county was created in 1808 and later organized in 1817. Cattaraugus County comprises the Olean, NY Micropolitan Statistical Area, which is included in the Buffalo-Cheektowaga, NY Combined Statistical Area. Within its boundaries are the Allegany Indian Reservation of the Seneca Nation of New York, and the Allegany State Park. The Allegheny River runs through the county."