There are 9 US Post Offices in Sagadahoc County serving a total of 35,281 residents equating to 3,920 residents per post office. It's estimated that approximately 56,312 packages are handled across the 9 county post offices annually. Sagadahoc County (/\u02c8s\u00e6\u0261\u0259d\u0259\u02cch\u0252k/ SAG-\u0259-d\u0259-hok) is a county located in the U.S. state of Maine. As of the 2010 census, the population was 35,293. Its county seat is Bath. In geographic area, it is the smallest county in Maine. Sagadahoc County is part of the Portland\u2013South Portland, ME Metropolitan Statistical Area."