High Quality Content by WIKIPEDIA articles! Sagadahoc County is a county located in the U.S. state of Maine. As of 2000, the population was 35,214. Its county seat is Bath. In land area, it is the smallest county in Maine. Sagadahoc County is part of the Portland South Portland Biddeford, Maine, Metropolitan Statistical Area. Sagadahoc County was formerly included in York, and later, in Lincoln County; having been set off from the latter and incorporated in 1854. The exploring company of DeMonts, led by the intrepid Champlain made the first known visit of Europeans to Sagadahoc. Sir William Popham's colony, having erected buildings and constructed a vessel, after a few months' sojourn abandoned their settlement in 1608; but English fishermen and trappers continued to visit the rivers and shores of the County. Capt. John Smith, of Virginia fame, explored the region in 1614 ; and on the map of the country which he displayed to King Charles I of England, that monarch entered the name "Leethe" as a substitute for "Sagadahoc."