| | 2301960790 | Prentiss UT | Penobscot County | ME | Statistical entity S |
| | 2301959950 | Plymouth town | Penobscot County | ME | Active government
providing primary
general-purpose functions A |
| | 2301957936 | Penobscot Indian Island
Reservation | Penobscot County | ME | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |
| | 2301957150 | Patten town | Penobscot County | ME | Active government
providing primary
general-purpose functions A |
| | 2301957045 | Passadumkeag town | Penobscot County | ME | Active government
providing primary
general-purpose functions A |
| | 2301955680 | Orrington town | Penobscot County | ME | Active government
providing primary
general-purpose functions A |
| | 2301955565 | Orono town | Penobscot County | ME | Active government
providing primary
general-purpose functions A |
| | 2301955225 | Old Town city | Penobscot County | ME | Fictitious entity created
to fill the Census Bureau
geographic hierarchy F |
| | 2301952710 | North Penobscot UT | Penobscot County | ME | Statistical entity S |
| | 2301949065 | Newport town | Penobscot County | ME | Active government
providing primary
general-purpose functions A |