Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Penobscot County, ME was 140822.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Penobscot County, ME reached a record high of 145537.00000 in January of 2012 and a record low of 140822.00000 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, White Alone (5-year estimate) in Penobscot County, ME - last updated from the United States Federal Reserve on May of 2024.