1850 Atlas
| Name | What | Place | Pop | Other |
| Northampton | PT, CH | Hampshire Co, MA | 5,278 | seat of justice, water by Connecticut river |
| Northampton | PT | Fulton Co, NY | 1,701 | water by Sacandaga river |
| Northampton | T | Burlington Co, NJ | 3,035 | water by Rancocus creek, tributaries of Little Egg Harbor river |
| Northampton | T | Bucks Co, PA | 1,843 | water by tributaries of Neshaming creek |
| Northampton | T | Lehigh Co, PA | 332 | |
| Northampton | PT | Summit Co, OH | 1,147 | |
| Northampton | T | Peoria Co, IL | ||
| Northampton | PO | Saganaw Co, MI | ||
| Northborough | PT | Worcester Co, MA | 1,535 | water by Assabet river |
| Northbridge | PT | Worcester Co, MA | 2,230 | water by Blackstone & Mumford rivers |
| Northbridge Centre | PO | Worcester Co, MA | ||
| Northern Liberties | not listed | Philadelphia Co, PA | 47,223 | suburban dist of Philadelphia with an independent corporation |
| Northfield | PT | Washington Co, ME | 246 | |
| Northfield | T | Merrimack Co, NH | 1,332 | water by Winnipiseogee river |
| Northfield | PT | Franklin Co, MA | 1,772 | water by Connecticut river |
| Northfield | PV | Litchfield twp, Litchfield Co, CT | ||
| Northfield | PT | Washington Co, VT | 2,922 | water by Dog river |
| Northfield | T | Richmond Co, Staten Island, NY | 4,020 | water by Staten Island sound |
| Northfield | PT | Summit Co, OH | 1,147 | water by Cuyahoga river & Ohio canal |
| Northfield | PT | Washtenaw Co, MI | 1,116 | |
| Northfield | PO | Boone Co, IN | ||
| Northfield | PO | Cook Co, IL | ||
| Northford | PV | North Bantford twp, New Haven Co, CT | ||
| Northington | PV | Cumberland Co, NC | ||
| Northport | PT | Waldo Co, ME | 1,260 | water by Penobscot river |
| Northport | PV | Tuscaloosa Co, AL | water by Black Warrior river | |
| Northport | PO | Noble Co, IN | ||
| Northumberland | PT | Coos Co, NH | 429 | water by Connecticut & Upper Ammonoosuck rivers |
| Northumberland | PT | Saratoga Co, NY | 1,775 | water by Hudson river |
| Northumberland | PB | Northumberland Co, PA | 1,044 | water by Susquehanna river at the confluence of its east & west branches; Susquehanna, North & West branch canals |
| Northville | PV | New Milford twp, Litchfield Co, CT | ||
| Northville | PV | Northampton twp, Fulton Co, NY | ||
| Northville | PV | Erie Co, PA | ||
| Northville | PV | Wayne Co, MI | water by west branch of Rouge river at the confluence of Walled lake outlet | |
| Northville | PV | La Salle Co, IL | ||
| Northwood | T | Rockingham Co, NH | 1,308 | water by head waters of Lamprey, Isinglass & Suncook rivers |
| Norton | PT | Bristol Co, MA | 1,966 | water by Rumford, Cocasset & Canoe rivers |
| Norton | PV | Marlborough twp, Delaware Co, OH | water by Olentaugy river | |
| Norton | PT | Summit Co, OH | 1,346 | water by Hudson's run, Wolf creek & Tuscarawas river |
| Norton | T | Ottawa Co, MI | ||
| Norton Centre | PO | Norton twp, Summit Co, OH | ||
| Norton Hill | PO | Greene Co, NY | ||
| Norton's Mills | PO | Ontario Co, NY | ||
| Nortonsville | PO | Albermarle Co, VA | ||
| Nortonsville | PO | Ottawa Co, MI | ||
| Norvell | PO | Jackson Co, MI | ||
| Norwalk | PT | Fairfield Co, CT | 4,651 | water by Long Island sound & Norwalk river |
| Norway | PT, CH | Huron Co, OH | 3,159 | seat of justice |
| Norway | PT | Oxford Co, ME | water by a pond discharging into Little Androscoggin river | |
| Norway | PT | Herkimer Co, NY | 1,052 | water by a tributary of West Canada creek |
| Norway | PO | Racine Co, WI | ||
| Norway | PO | Miller Co, MO | ||
| Norwegian | T | Schuylkill Co, PA | 2,642 | |
| Norwich | PT | Windsor Co, VT | 1,978 | water by Connecticut & Ompompanoosue river |
| Norwich | PT | Hampshire Co, MA | ||
| Norwich | City | New London Co, CT | 10,255 | seat of justice w New London |
| Norwich | PT, CH | Chenango Co, NY | 3,615 | seat of justice, water by Chenango river |
| Norwich | V | Oyster Bay twp, Queen's Co, Long Island, NY | ||
| Norwich | PT | McKean Co, PA | 265 | water by Potatoe creek |
| Norwich | PV | Uniion twp, Muskingum Co, OH | ||
| Norwich | T | Franklin Co, OH | 1,053 | |
| Norwich | T | Huron Co, OH | 1,021 | |
| Norwichtown | PV | Norwich twp, New London Co, CT | ||
| Norwood | PV | Stanley Co, NC | ||
| Norwood | PO | Bedford Co, VA | ||
| Notasulga | PO | Macon Co, AL | ||
| Notre Dame | PO | St Joseph Co, IN | ||
| Nottingham | PT | Rockingham Co, NH | 1,268 | water by Little & North rivers |
| Nottingham | T | Mercer Co, NJ | 4,489 | water by Assunpink & Crosswick's creeks |
| Nottingham | T | Washington Co, PA | 1,008 | water by Peter's, Mingo & Little Mingo creeks |
| Nottingham | PV | Prince George's Co, MD | ||
| Nottingham | PT | Harrison Co, OH | 1,236 | |
| Nottingham | PO | Davis Co, IA | ||
| Nottingham | PO | Wells Co, IN | ||
| Nottingham Turnpike | PO | Rockingham Co, NH | ||
| Notla | PO | Cherokee Co, NC | ||
| Nottoway | PV, CH | Nottoway Co, VA | seat of justice, water by Nottoway river | |
| Nottoway | T | St Joseph Co, MI | 1,165 | |
| Novi | PT | Oakland Co, MI | 1,428 | water by west branch of Rouge river |
| Noxapater | PO | Winston Co, MS | ||
| Noysville | PO | Cook Co, IL | ||
| Noysville | PO | Dodge Co, WI | ||
| Nubbin Ridge | PO | Hardman Co, TN | ||
| Null's Mills | PO | Fayette Co, IN | ||
| Numa | PO | Parker Co, IN | ||
| Number One | PO | Wayne Co, OH | ||
| Number Two | PO | Marion Co, FL | ||
| Number Three | PO | Aroostook Co, ME | ||
| Nunda | PT | Livingston Co, NY | 2,138 | water by Canaseraga & Cashaqua creeks |
| Nunda Valley | V | Nunda twp, Livingston Co, NY | water by Cashaqua creek | |
| Nutbush | PO | Warren Co, NC | ||
| Nyack | PV | Orangetown twp, Rockland Co, NY | water by Hudson river | |
| Nyack Turnpike | PO | Clarkstown twp, Rockland Co, NY |