There are 32 US Post Offices in Windham County serving a total of 117,370 residents equating to 3,668 residents per post office. It's estimated that approximately 187,336 packages are handled across the 32 county post offices annually. Windham County is a county located in the northeastern corner of the U.S. state of Connecticut. As of the 2010 census, the population was 118,428, making it the least populous county in Connecticut. Windham County is included in the Worcester, MA-CT Metropolitan Statistical Area, which is also included in the Boston-Worcester-Providence, MA-RI-NH-CT Combined Statistical Area. The entire county is within the Quinebaug and Shetucket Rivers Valley National Heritage Corridor, as designated by the National Park Service."