| 3914555902 | Nile | |
| 1703153013 | Niles | |
| 1803553928 | Niles | |
| 1906793111 | Niles | |
| 2602157780 | Niles | |
| 3601151198 | Niles | |
| 2716746276 | Nilsen | |
| 1711753052 | Nilwood | |
| 3915155944 | Nimishillen | |
| 1808154000 | Nineveh | |
| 2703746330 | Nininger | |
| 2003550625 | Ninnescah | |
| 2009550650 | Ninnescah | |
| 2015550700 | Ninnescah | |
| 2017350725 | Ninnescah | |
| 3110734405 | Niobrara | |
| 56027 | Niobrara County remainder | |
| 2000750775 | Nippawalla | |
| 4208154504 | Nippenose | |
| 1904793114 | Nishnabotny | |
| 3609351264 | Niskayuna | |
| 1703953117 | Nixon | |
| 1715953156 | Noble | |
| 1801754054 | Noble | |
| 1807554072 | Noble | |
| 1809154090 | Noble | |
| 1811354108 | Noble | |
| 1813954126 | Noble | |
| 1814554144 | Noble | |
| 1816954162 | Noble | |
| 1902993117 | Noble | |
| 2004150800 | Noble | |
| 2005350825 | Noble | |
| 2011750850 | Noble | |
| 2602357860 | Noble | |
| 3801757020 | Noble | |
| 3901155986 | Noble | |
| 3903956014 | Noble | |
| 3912156028 | Noble | |
| 40103 | Noble County remainder | |
| 2301549660 | Nobleboro | |
| 27105 | Nobles County remainder | |
| 1805754198 | Noblesville | |
| 4201754576 | Nockamixon | |
| 1900393120 | Nodaway | |
| 1914593123 | Nodaway | |
| 1917393126 | Nodaway | |
| 2914752724 | Nodaway | |
| 3809357060 | Nogosek | |
| 2703546384 | Nokay Lake | |
| 1713553182 | Nokomis | |
| 1902193129 | Nokomis | |
| 5508557450 | Nokomis | |
| 48353 | Nolan County remainder | |
| 3800357140 | Noltimier | |
| 02180 | Nome Census Area remainder | |
| 3807157260 | Noonan | |
| 1708553208 | Nora | |
| 2702946438 | Nora | |
| 2712146456 | Nora | |
| 3804557300 | Nora | |
| 2711346510 | Norden | |
| 3804557340 | Norden | |
| 4603945300 | Norden | |
| 4605745340 | Norden | |
| 2716746528 | Nordick | |
| 2700146546 | Nordland | |
| 2708346564 | Nordland | |
| 4609145380 | Nordland | |
| 3803157380 | Nordmore | |
| 2706146582 | Nore | |
| 0900553470 | Norfolk | |
| 2502146050 | Norfolk | |
| 2712946600 | Norfolk | |
| 3608951330 | Norfolk | |
| 25021 | Norfolk County remainder | |
| 51710 | Norfolk city remainder | |
| 3800357420 | Norma | |
| 1711353247 | Normal | |
| 3804957500 | Normal | |
| 1706353286 | Norman | |
| 2610157900 | Norman | |
| 2711546618 | Norman | |
| 2717346636 | Norman | |
| 3809757540 | Norman | |
| 27107 | Norman County remainder | |
| 2717346690 | Normania | |
| 3800557580 | Normania | |
| 2713746708 | Normanna | |
| 3801757620 | Normanna | |
| 2302549835 | Norridgewock | |
| 5507357600 | Norrie | |
| 4609545460 | Norris | |
| 1808954414 | North | |
| 1809954432 | North | |
| 2009950975 | North | |
| 2020751025 | North | |
| 2711346762 | North | |
| 3906756084 | North | |
| 4206954680 | North Abington | |
| 2614157940 | North Allis | |
| 2500946365 | North Andover | |
| 4207554720 | North Annville | |
| 4207354768 | North Beaver | |
| 1814954504 | North Bend | |
| 5505357775 | North Bend | |
| 3401752470 | North Bergen | |
| 2303150325 | North Berwick | |
| 4212554800 | North Bethlehem | |
| 3911756224 | North Bloomfield | |
| 2608758090 | North Branch | |
| 2705946816 | North Branch | |
| 4213154824 | North Branch | |
| 0900953890 | North Branford | |
| 2502747135 | North Brookfield | |
| 2004751100 | North Brown | |
| 3402352560 | North Brunswick | |
| 4604545500 | North Bryant | |
| 4200554856 | North Buffalo | |
| 0900554030 | North Canaan | |
| 3611951693 | North Castle | |
| 3115534755 | North Cedar | |
| 4203754880 | North Centre | |
| 4213354904 | North Codorus | |
| 3602951803 | North Collins | |
| 4207554928 | North Cornwall | |
| 4202954936 | North Coventry | |
| 3807157722 | North Creel | |
| 3605151869 | North Dansville | |
| 4601345540 | North Detroit | |
| 3602751891 | North East | |
| 4204954960 | North East | |
| 3603151935 | North Elba | |
| 4200355016 | North Fayette | |
| 1705953702 | North Fork | |
| 1905593132 | North Fork | |
| 2714546960 | North Fork | |
| 3110734765 | North Frankfort | |
| 3106134790 | North Franklin | |
| 4212555040 | North Franklin | |
| 2715946978 | North Germany | |
| 3608352100 | North Greenbush | |
| 3301554580 | North Hampton | |
| 3400553070 | North Hanover | |
| 3601352155 | North Harmony | |
| 0900954870 | North Haven | |
| 2301351620 | North Haven | |
| 4201155088 | North Heidelberg | |
| 3605953000 | North Hempstead | |
| 1713153806 | North Henderson | |
| 2712746996 | North Hero | |
| 5001350650 | North Hero | |
| 2000951200 | North Homestead | |
| 4213355112 | North Hopewell | |
| 3603153077 | North Hudson | |
| 4212955128 | North Huntingdon | |
| 4400951580 | North Kingstown | |
| 5504358125 | North Lancaster | |
| 4207555160 | North Lebanon | |
| 1713553949 | North Litchfield | |
| 3801958020 | North Loma | |
| 4207555176 | North Londonderry | |
| 3117534860 | North Loup | |
| 4206355184 | North Mahoning | |
| 4210755192 | North Manheim | |
| 4204155216 | North Middleton | |
| 1707954001 | North Muddy | |
| 4204155248 | North Newton | |
| 3601753297 | North Norwich | |
| 1702954014 | North Okaw | |
| 3801958060 | North Olga | |
| 2705147140 | North Ottawa | |
| 1711754040 | North Otter | |
| 1711754053 | North Palmyra | |
| 2606758720 | North Plains | |
| 3804958100 | North Prairie | |
| 4400751760 | North Providence | |
| 2019351300 | North Randall | |
| 2501748955 | North Reading | |
| 2008351350 | North Roscoe | |
| 2911553300 | North Salem | |
| 3611953517 | North Salem | |
| 2018551375 | North Seward | |
| 4200755400 | North Sewickley | |
| 2605758800 | North Shade | |
| 4203955408 | North Shenango | |
| 02185 | North Slope Borough remainder | |
| 4400752480 | North Smithfield | |
| 2605758880 | North Star | |
| 2701547248 | North Star | |
| 2713747255 | North Star | |
| 3801358140 | North Star | |
| 0901155500 | North Stonington | |
| 4212555432 | North Strabane | |
| 4201555448 | North Towanda | |
| 4205155464 | North Union | |
| 4210755472 | North Union | |
| 4200355488 | North Versailles | |
| 3800558180 | North Viking | |
| 4207755576 | North Whitehall | |
| 4201355592 | North Woodbury | |
| 2300553860 | North Yarmouth | |
| 3603551407 | Northampton | |
| 4201754688 | Northampton | |
| 4211154704 | Northampton | |
| 37131 | Northampton County remainder | |
| 42095 | Northampton County remainder | |
| 51131 | Northampton County remainder | |
| 2502746820 | Northborough | |
| 2502746925 | Northbridge | |
| 1700153624 | Northeast | |
| 1811754648 | Northeast | |
| 4209954968 | Northeast Madison | |
| 1705553637 | Northern | |
| 2700746906 | Northern | |
| 1703153676 | Northfield | |
| 2302951375 | Northfield | |
| 2501147835 | Northfield | |
| 2616158280 | Northfield | |
| 2713146942 | Northfield | |
| 3301354260 | Northfield | |
| 3807157780 | Northfield | |
| 5002350275 | Northfield | |
| 5505357975 | Northfield | |
| 3915356490 | Northfield Center | |
| 2901153048 | Northfork | |
| 2711947032 | Northland | |
| 2713747050 | Northland | |
| 3807357900 | Northland | |
| 4213155232 | Northmoreland | |
| 2302752845 | Northport | |
| 3300756100 | Northumberland | |
| 3609153737 | Northumberland | |
| 42097 | Northumberland County remainder | |
| 51133 | Northumberland County remainder | |
| 1709954248 | Northville | |
| 2616359000 | Northville | |
| 4611545780 | Northville | |
| 1811755152 | Northwest | |
| 3802158220 | Northwest | |
| 3804358260 | Northwest | |
| 3917157162 | Northwest | |
| 02188 | Northwest Arctic Borough remainder | |
| 3301556820 | Northwood | |
| 3803558340 | Northwood | |
| 1709154352 | Norton | |
| 2008751475 | Norton | |
| 2500549970 | Norton | |
| 2716947374 | Norton | |
| 3809958380 | Norton | |
| 5000952750 | Norton | |
| 20137 | Norton County remainder | |
| 51720 | Norton city remainder | |
| 2607559180 | Norvell | |
| 0900156060 | Norwalk | |
| 1915593135 | Norwalk | |
| 3907757316 | Norwalk | |
| 1909193138 | Norway | |
| 1918993141 | Norway | |
| 1919793144 | Norway | |
| 2015751575 | Norway | |
| 2301754000 | Norway | |
| 2604359240 | Norway | |
| 2704547392 | Norway | |
| 2706947410 | Norway | |
| 3604353968 | Norway | |
| 3809758540 | Norway | |
| 4602745860 | Norway | |
| 4608345900 | Norway | |
| 4610945940 | Norway | |
| 4612545980 | Norway | |
| 5510158600 | Norway | |
| 2706747464 | Norway Lake | |
| 3810358580 | Norway Lake | |
| 4210755624 | Norwegian | |
| 2711147482 | Norwegian Grove | |
| 2502350145 | Norwell | |
| 0901156270 | Norwich | |
| 2611359280 | Norwich | |
| 2612359300 | Norwich | |
| 3601753990 | Norwich | |
| 3804958660 | Norwich | |
| 3904957344 | Norwich | |
| 3907757358 | Norwich | |
| 4208355632 | Norwich | |
| 5002752900 | Norwich | |
| 2502150250 | Norwood | |
| 2602959340 | Norwood | |
| 5506758700 | Norwood | |
| 1703154430 | Norwood Park | |
| 2607359360 | Nottawa | |
| 2614959400 | Nottawa | |
| 1817955422 | Nottingham | |
| 3301557460 | Nottingham | |
| 3906757456 | Nottingham | |
| 4212555712 | Nottingham | |
| 51135 | Nottoway County remainder | |
| 2615759420 | Novesta | |
| 2612559460 | Novi | |
| 40105 | Nowata County remainder | |
| 4213155736 | Noxen | |
| 28103 | Noxubee County remainder | |
| 4203555744 | Noyes | |
| 31129 | Nuckolls County remainder | |
| 48355 | Nueces County remainder | |
| 2711347590 | Numedal | |
| 1711154495 | Nunda | |
| 2603159500 | Nunda | |
| 2704747608 | Nunda | |
| 3605154089 | Nunda | |
| 4607946100 | Nunda | |
| 3401353680 | Nutley | |
| 4603746140 | Nutley | |
| 32023 | Nye County remainder | |
| 2700748040 | O'Brien | |
| 1716355262 | O'Fallon | |
| 4200356384 | O'Hara | |
| 4604947060 | O'Neil | |
| 4608546220 | Oacoma | |
| 1912993147 | Oak | |
| 2018351650 | Oak | |
| 2714547644 | Oak | |
| 2500750390 | Oak Bluffs | |
| 3102335280 | Oak Creek | |
| 3115535315 | Oak Creek | |
| 3800958700 | Oak Creek | |
| 1908993150 | Oak Dale | |
| 1800755620 | Oak Grove | |
| 5500558950 | Oak Grove | |
| 5502759000 | Oak Grove | |
| 5509359025 | Oak Grove | |
| 4603746260 | Oak Gulch | |
| 4606746300 | Oak Hollow | |
| 4601146340 | Oak Lake | |
| 2703547824 | Oak Lawn | |
| 1703154898 | Oak Park | |
| 2708947878 | Oak Park | |
| 3909757708 | Oak Run | |
| 2004951950 | Oak Valley | |
| 2711148004 | Oak Valley | |
| 3800958860 | Oak Valley | |
| 1718954599 | Oakdale | |
| 5508158875 | Oakdale | |
| 1900993153 | Oakfield | |
| 2300354385 | Oakfield | |
| 2608159580 | Oakfield | |
| 3603754166 | Oakfield | |
| 5503958925 | Oakfield | |
| 2502750670 | Oakham | |
| 3800358780 | Oakhill | |
| 1716954794 | Oakland | |
| 1906993156 | Oakland | |
| 1911593159 | Oakland | |
| 2002951750 | Oakland | |
| 2301154560 | Oakland | |
| 2612559820 | Oakland | |
| 2704747788 | Oakland | |
| 2708747806 | Oakland | |
| 3102135525 | Oakland | |
| 3806158820 | Oakland | |
| 4201955992 | Oakland | |
| 4211556016 | Oakland | |
| 4212156024 | Oakland | |
| 5501359075 | Oakland | |
| 5503159100 | Oakland | |
| 5505559125 | Oakland | |
| 26125 | Oakland County remainder | |
| 1711554859 | Oakley | |
| 2010951850 | Oakley | |
| 2702747932 | Oakport | |
| 3803558900 | Oakville | |
| 1718355015 | Oakwood | |
| 2715748022 | Oakwood | |
| 3809958980 | Oakwood | |
| 4601146440 | Oakwood | |
| 5513759225 | Oasis | |
| 2003952025 | Oberlin | |
| 3800559060 | Oberon | |
| 47131 | Obion County remainder | |
| 1703355119 | Oblong | |
| 3402554270 | Ocean | |
| 3402954300 | Ocean | |
| 34029 | Ocean County remainder | |
| 26127 | Oceana County remainder | |
| 2609360120 | Oceola | |
| 1914393162 | Ocheyedan | |
| 48357 | Ochiltree County remainder | |
| 1717355145 | Oconee | |
| 3114135630 | Oconee | |
| 13219 | Oconee County remainder | |
| 45073 | Oconee County remainder | |
| 5513359275 | Oconomowoc | |
| 5508359375 | Oconto | |
| 55083 | Oconto County remainder | |
| 5508359425 | Oconto Falls | |
| 2614160160 | Ocqueoc | |
| 1710555184 | Odell | |
| 2008952125 | Odessa | |
| 2015952150 | Odessa | |
| 2606760200 | Odessa | |
| 2701148076 | Odessa | |
| 3804159100 | Odessa | |
| 3807159140 | Odessa | |
| 4604546460 | Odessa | |
| 1712155223 | Odin | |
| 2716548112 | Odin | |
| 3804959180 | Odin | |
| 2019552250 | Ogallah | |
| 1701955288 | Ogden | |
| 2016152300 | Ogden | |
| 2609160260 | Ogden | |
| 3605554474 | Ogden | |
| 2711548148 | Ogema | |
| 5509959525 | Ogema | |
| 2612960300 | Ogemaw | |
| 26129 | Ogemaw County remainder | |
| 46102 | Oglala Lakota County remainder | |
| 4211156352 | Ogle | |
| 13221 | Oglethorpe County remainder | |
| 2303154980 | Ogunquit | |
| 1701155392 | Ohio | |
| 1800556124 | Ohio | |
| 1802556142 | Ohio | |
| 1814756160 | Ohio | |
| 1817356178 | Ohio | |
| 1912193165 | Ohio | |
| 2005952350 | Ohio | |
| 2013552400 | Ohio | |
| 2016952425 | Ohio | |
| 2017352450 | Ohio | |
| 2018552475 | Ohio | |
| 3604354507 | Ohio | |
| 3902557960 | Ohio | |
| 3905357974 | Ohio | |
| 3911157988 | Ohio | |
| 4200356392 | Ohio | |
| 4605946580 | Ohio | |
| 21183 | Ohio County remainder | |
| 54069 | Ohio County remainder | |
| 1713155405 | Ohio Grove | |
| 1812356214 | Oil | |
| 4203956464 | Oil Creek | |
| 4212156480 | Oil Creek | |
| 5511359600 | Ojibwa | |
| 12091 | Okaloosa County remainder | |
| 53047 | Okanogan County remainder | |
| 4607546640 | Okaton | |
| 1717355457 | Okaw | |
| 1718955483 | Okawville | |
| 12093 | Okeechobee County remainder | |
| 2011752550 | Oketo | |
| 40107 | Okfuskee County remainder | |
| 40109 | Oklahoma County remainder | |
| 40111 | Okmulgee County remainder | |
| 1905993168 | Okoboji | |
| 28105 | Oktibbeha County remainder | |
| 4601546740 | Ola | |
| 3402354705 | Old Bridge | |
| 4208156608 | Old Lycoming | |
| 0901157040 | Old Lyme | |
| 2303155085 | Old Orchard Beach | |
| 1700555730 | Old Ripley | |
| 0900757320 | Old Saybrook | |
| 1711355782 | Old Town | |
| 21185 | Oldham County remainder | |
| 48359 | Oldham County remainder | |
| 3403354810 | Oldmans | |
| 3600954727 | Olean | |
| 4611546860 | Olean | |
| 4201156672 | Oley | |
| 1720355821 | Olio | |
| 1711955834 | Olive | |
| 1803956520 | Olive | |
| 1814156556 | Olive | |
| 1904593171 | Olive | |
| 2003952675 | Olive | |
| 2603760440 | Olive | |
| 2613960460 | Olive | |
| 3102336120 | Olive | |
| 3611154749 | Olive | |
| 3910558282 | Olive | |
| 3912158310 | Olive | |
| 2606360520 | Oliver | |
| 2607960540 | Oliver | |
| 3810559260 | Oliver | |
| 3900158366 | Oliver | |
| 4206556712 | Oliver | |
| 4208756720 | Oliver | |
| 4209956728 | Oliver | |
| 38065 | Oliver County remainder | |
| 2013952725 | Olivet | |
| 3804959300 | Olivia | |
| 3903558408 | Olmsted | |
| 27109 | Olmsted County remainder | |
| 1715955925 | Olney | |
| 2710548274 | Olney | |
| 3809559380 | Olson | |
| 5505159850 | Oma | |
| 1705956016 | Omaha | |
| 3117337017 | Omaha | |