Waldo County General Hospital (Belfast, Maine). Waldo County General Hospital first opened its doors to patients in 1904. This 111-year-old hospital is located next to the ocean about 40 miles south of Bangor, Maine. In addition to having a four-star rating from CMS' Hospital Compare based on patient satisfaction scores, it has been named a Top 100 Critical Access Hospital four times by iVantage Health Analytics, most recently in 2015.