1850 Atlas
| Name | What | Place | Pop | Other |
| Piasa | PO | Macoupin Co, IL | ||
| Pickaway | T | Pickaway Co, OH | 1,425 | |
| Pickaway Plains | PO | Monroe Co, VA | ||
| Pickayune | PO | Henderson Co, IL | ||
| Pickens | PV, CH | Pickens dist, SC | seat of justice | |
| Pickensville | PV | Pickens dist, SC | ||
| Pickensville | PV | Pickens Co, AL | 276 | water by Tonbigbee river |
| Pickereltown | PO | Logan Co, OH | ||
| Pickerington | PV | Violet twp, Fairfield Co, OH | 849 | |
| Picolata | PO | St Johns Co, FL | ||
| Piedmont | PV | Harris Co, GA | ||
| Piedmont | PO | Nelson Co, VA | ||
| Piermont | PT | Grafton Co, NH | 948 | water by Connecticut river & Eastman's brook |
| Piermont | PV | Orangetown twp, Rockland Co, NY | water by Hudson river & Sparkhill creek | |
| Piermont | PT | St Lawrence Co, NY | 1,459 | water by Oswegatchie, Grass & Racket rivers |
| Piermont | PT | Ashtabula Co, OH | 999 | |
| Pierrepont Manor | PO | Jefferson Co, NY | ||
| Piffard | PO | Livingston Co, NY | ||
| Pigeon | T | Vanderburgh Co, IN | 5,205 | |
| Pigeon Creek | PO | Ralls Co, MO | ||
| Pigeon Forge | PO | Sevier Co, TN | ||
| Pigeon Grove | PO | Columbia Co, WI | ||
| Pigeon River | PO | Haywood Co, NC | ||
| Pigeon Roost | PO | Choctaw Co, MS | ||
| Pigeon Run | PO | Campbell Co, VA | ||
| Pike | PT | Wyoming Co, NY | 2,003 | water by East & West Koy creeks |
| Pike | PT | Potter Co, PA | ||
| Pike | PT | Berks Co, PA | 883 | water by head waters of Nanatawny creek |
| Pike | PT | Bradford Co, PA | 1,747 | water by Wyalusing creek |
| Pike | T | Clearfield Co, PA | 1,249 | |
| Pike | PO | Muscatine Co, IA | ||
| Pike | T | Brown Co, OH | 1,022 | |
| Pike | PT | Perry Co, OH | 2,147 | |
| Pike | T | Clarke Co, OH | 1,315 | |
| Pike | T | Coshocton Co, OH | 1,081 | |
| Pike | T | Knox Co, OH | 1,720 | |
| Pike | T | Madison Co, OH | 423 | |
| Pike | T | Stark Co, OH | 1,447 | |
| Pike | PO | Washington Co, ME | ||
| Pike | PT | Jay Co, IN | 786 | |
| Pike Creek | PO | Ripley Co, MO | ||
| Pike Mills | PO | Potter Co, PA | ||
| Pike Pond | PO | Sullivan Co, NY | ||
| Pike Run | PT | Washington Co, PA | water by Pike & Little Pike runs | |
| Pike Township | PO | Berks Co, PA | ||
| Pike Valley | PO | Potter Co, PA | ||
| Piketon | PV, CH | Pike Co, OH | 690 | seat of justice, water by Scioto river |
| Piketon | PV, CH | Pike Co, KY | seat of justice, water by west fork of Sandy river | |
| Piketon | PV | Marion Co, IN | ||
| Pikesville | PV | Baltimore Co, MD | water by Patapsco river | |
| Pikeville | PV, CH | Marion Co, AL | seat of justice | |
| Pikeville | PV, CH | Bledsoe Co, TN | seat of justice | |
| Pikeville | PO | Chickasaw Co, MS | ||
| Pilahatchee | PO | Rankin Co, MO | ||
| Pilatka | PV | Putman Co, FL | water by St John's river | |
| Pilcher | PO | Belmont Co, OH | ||
| Pile's Grove | T | Salem Co, NJ | 2,962 | water by Salem creek |
| Pillar Point | PO | Brownville twp, Jefferson Co, NY | ||
| Pillow | PO | Dauphin Co, PA | ||
| Pillowville | PO | Weakley Co, TN | ||
| Pilot | PO | Vermilion Co, IL | ||
| Pilot Grove | PO | Cooper Co, MO | ||
| Pilot Grove | PO | Lee Co, IA | ||
| Pilot Grove | PO | Hancock Co, IL | ||
| Pilot Grove | PO | Grayson Co, TX | ||
| Pilot Hill | PV, CH | Fulton Co, AR | seat of justice | |
| Pilot Hill | PO | Mason Co, IL | ||
| Pilot Knob | PO | Crawford Co, IL | ||
| Pilot Knob | PO | Todd Co, KY | ||
| Pinchero | PO | Ohio Co, KY | ||
| Pinckney | T | Lewis Co, NY | 1,208 | water by Deer river & Sandy creek |
| Pinckney | V | Rutherford Co, NC | ||
| Pinckney | PV | Williamson Co, TN | water by Harpeth river | |
| Pinckney | PV | Warren Co, MO | water by Missouri river | |
| Pinckney | PO | Livingston Co, MI | ||
| Pinckney | see Pinkney | |||
| Pinckneyville | PV | Gwinnett Co, GA | near the Chattahoochie river | |
| Pinckneyville | PV | Tallapoosa Co, AL | ||
| Pinckneyville | PV, CH | Perry Co, IL | seat of justice, water by Big Beaucoup creek | |
| Pine | PO | Vienna twp, Oneida Co, NY | ||
| Pine | T | Alleghany Co, PA | 2,109 | water by branches of Alleghany river |
| Pine | T | Armstrong Co, PA | 2,288 | water by Alleghany river |
| Pine Bluff | PO | Copiah Co, MS | ||
| Pine Bluff | PO | Pulaski Co, MO | ||
| Pine Bluff | PV | Jefferson Co, AR | 460 | seat of justice, water by Arkansas river |
| Pine Bluff | PO | Callaway Co, KY | ||
| Pine Bluff | PO | Dane Co, WI | ||
| Pine Bluff | PO | Red River Co, TX | ||
| Pine Brook | PV | Hanover twp, Morris Co, NJ | ||
| Pine Bush | PO | Ulster Co, NY | ||
| Pine Creek | T | Clinton Co, PA | ||
| Pine Creek | PO | Tioga Co, PA | ||
| Pine Creek | T | Jefferson Co, PA | ||
| Pine Creek | PO | Calhoun Co, MI | ||
| Pine Creek | PO | Ogle Co, IL | ||
| Pine Flat | PO | Bossier parish, LA | ||
| Pine Grove | PO | Tyrone twp, Steuben Co, NY | ||
| Pine Grove | T | Venango Co, PA | ||
| Pine Grove | PT | Schuylkill Co, PA | 1,967 | water by Swatara creek |
| Pine Grove | PT | Warren Co, PA | 1,531 | |
| Pine Grove | PO | Wetzel Co, VA | ||
| Pine Grove | PO | St Tammany parish, LA | ||
| Pine Grove | PO | Springfield twp, Gallia Co, OH | ||
| Pine Grove | PO | Clarke Co, KY | ||
| Pine Grove Mills | PO | Centre Co, PA | ||
| Pine Hill | PO | Washington Co, RI | ||
| Pine Hill | PO | Shandaken twp, Ulster Co, NY | ||
| Pine Hill | V | Elba twp, Genesee Co, NY | ||
| Pine Hill | PO | Wilcox Co, AL | ||
| Pine Hill | PO | York Co, PA | ||
| Pine Hill | PO | Talbot Co, GA | ||
| Pine Hill | PO | Wachita parish, LA | ||
| Pine Hill | PO | Rusk Co, TX | ||
| Pine Hook | PO | Grant Co, WI | ||
| Pine Island | PO | Jefferson Co, TX | ||
| Pine Lake | PO | Oakland Co, MI | ||
| Pine Land | PO | Meigs Co, TN | ||
| Pine Level | PO | Montgomery Co, AL | ||
| Pine Lick | PO | Clarke Co, IN | ||
| Pine Log | PO | Cass Co, GA | ||
| Pine Meadow | PO | Litchfield Co, CT | ||
| Pine Plain | PO | Montcalm Co, MI | ||
| Pine Plains | PT | Dutchess Co, NY | 1,416 | water by Chicomico creek |
| Pine Plains | PO | Ocean Co, NJ | ||
| Pine River | PO | Marquette Co, WI | ||
| Pine Run | PO | Genesee Co, MI | ||
| Pine Street | PO | Elk Co, PA | ||
| Pine Town | PO | Cherokee Co, TX | ||
| Pine Tree | PO | Upshur Co, TX | ||
| Pine Valley | PO | Chemung Co, NY | ||
| Pine Valley | PO | Warren Co, PA | ||
| Pine Valley | PO | Yallabusha Co, MS | ||
| Pine View | PO | Fauquier Co, VA | ||
| Pine Woods | PO | Madison Co, IL | ||
| Pineborough | not listed | Marion Co, FL | ||
| Piner's Cross Roads | PO | Kenton Co, KY | ||
| Pine's Bridge | PO | Yorktown twp, Westchester Co, NY | ||
| Pineville | PV | Bucks Co, PA | ||
| Pineville | PV | Charleston dist, SC | water by Santee river | |
| Pineville | PV | Marengo Co, AL | water by Tombigbee river | |
| Pineville | PO | Marion Co, GA | ||
| Pineville | PO | Gloucester Co, NJ | ||
| Pineville | PO | Bossier parish, LA | ||
| Pineville | PO | Smith Co, MS | ||
| Piney | PO | Johnson Co, AR | ||
| Piney Creek | PO | Carroll Co, MD | ||
| Piney Grove | PO | Sampson Co, NC | ||
| Piney Grove | PO | Hardeman Co, TN | ||
| Piney Head | PO | Appling dist, SC |