None of the households in Penobscot County, ME reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
98.3% of the residents in Penobscot County, ME are U.S. citizens.
Penobscot County, ME borders Aroostook County, ME, Hancock County, ME, Piscataquis County, ME, Somerset County, ME, Waldo County, ME, and Washington County, ME.