Unemployment Rate in Penobscot County, ME was 4.10% in February of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Penobscot County, ME reached a record high of 10.10 in February of 1991 and a record low of 2.50 in August of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Penobscot County, ME - last updated from the United States Federal Reserve on May of 2024.