1850 Atlas
| Name | What | Place | Pop | Other |
| Cabell | PO, CH | Cabell Co, VA | ||
| Cabello | PO | Carroll Co, OH | ||
| Cabin Creek | PO | Lewis Co, KY | ||
| Cabin Hill | PO | Andes Twp, Delaware Co, NY | ||
| Cabin Hill | PO | Elkhart Co, IN | ||
| Cabin Point | PV | Surry Co, VA | water by Chipoak creek | |
| Cable | PO | Guernsey Co, OH | ||
| Cabot | PT | Caledonia Co, VT | 1,356 | water by Onion river |
| Cabotville | PV | Springfield twp, Hampden Co, MA | water by Chickapee & Connectcut rivers | |
| Cacaponyville | PO | Hampshire Co, VA | ||
| Cashe | T | Greene Co, AR | ||
| Cashe | T | Monroe Co, AR | 449 | |
| Cashemasso | PO | Dallas Co, AR | ||
| Cadis Cove | PO | Blount Co, TN | ||
| Caddo | T | Clark Co, AR | 1,001 | |
| Caddo Cove | T | Hot Springs Co, AR | 489 | |
| Cadiz | PO | Cattaraugus Co, NY | ||
| Cadiz | PT, CH | Harrison Co, OH | 2,453 | seat of justice |
| Cadiz | PV | Trigg Co, KY | water by Little river | |
| Cadiz | PV | Henry Co, IN | ||
| Cadiz | PO | Greene Co, WI | ||
| Cadron | T | Conway Co, AR | ||
| Cadwallader | PO | Perry twp, Tuscarawas Co, OH | ||
| Caddyville | PV | Plattsburgh twp, Clinton Co, NY | water by Saranac river | |
| Caesar's Creek | T | Greene Co, OH | 1,870 | |
| Caernaroon | T | Lancaster Co, PA | 1,551 | |
| Caernaroon | T | Berks Co, PA | 977 | |
| Cageville | PO | Haywood Co, TN | ||
| Cahara | PV, CH | Dallas Co, AR | seat of justice, water by Alabama & Cahaba rivers | |
| Cahokia | PV | St Clair Co, IL | water by Mississippi river | |
| Cain | T | Fountain Co, IN | 1,008 | |
| Cain's | PO | Lancaster Co, PA | ||
| Cain's | PO | Gwinnett Co, GA | ||
| Cainsville | PO | Wilson Co, TN | ||
| Ca Ira | PV | Cumberland Co, VA | water by Willis river | |
| Cairo | PT | Greene Co, NY | 2,831 | water by Catskill creek |
| Cairo | PO | Edgefield dist, SC | ||
| Cairo | PV | Henderson Co, KY | ||
| Cairo | PV | Decatar Co, GA | water by Little river | |
| Cairo | PO | Stark Co, OH | ||
| Cairo | PO | Sumner Co, TN | water by Cumberland river | |
| Cairo | PV | Alexander Co, IL | water by Mississippi & Ohio rivers | |
| Calabee | PO | Macon Co, AL | ||
| Calais | PT | Washington Co, ME | 4,749 | water by St Croix of Schoodic river |
| Calais | PT | Washing Co, VT | 1,410 | water by Onion river |
| Calais | PO | Monroe Co, OH | ||
| Calanbria | PO | Rowan Co, NC | ||
| Caldwell | PT, CH | Warren Co, NY | 752 | seat of justice, on Lake George |
| Caldwell | PT | Essex Co, NJ | 2,376 | water by Deep & Green brooks |
| Caldwell | PO | Greenville dist, SC | ||
| Caldwell | PO | Orange Co, NC | ||
| Caldwell | PO | Burlison Co, TX | ||
| Caldwell | PO | Pulaski o, AR | ||
| Caldwell | PV | Wachita parish, LA | ||
| Caldwell's Prairie | PO | Racine Co, OH | ||
| Caledonia | PT | Livingston Co, NY | 1,804 | water by Genesce river |
| Caledonia | PO | Elk Co, PA | ||
| Caledonia | PV | Claridon Twp, Marion Co, OH | water by Olentagy or Whetstone river | |
| Caledonia | PV | Lowndes Co, MS | ||
| Caledonia | PV | Henry Co, TN | ||
| Caledonia | PV | Pulaski Co, IL | water by Ohio river | |
| Caledonia | PV | Washington Co, MO | water by Big river | |
| Caledonia | PO | Jent Co, MI | ||
| Caledonia | T | Shiawassee Co, MI | 500 | |
| Caledonia | PO | Rusk Co, TX | ||
| Calhoun | PO | Autauga Co, AL | ||
| Calhoun | PV | Anderson dist, SC | ||
| Calhoun | PV | Limpkin Co, GA | ||
| Calhoun | PO | Daviess Co, KY | ||
| Calhoun | PV | McMinn Co, TN | water by Hiawassee river | |
| Calhoun | PV | Henry Co, MO | ||
| Calhoun | PO | Lafayette Co, AR | ||
| Calhoun's Mills | PO | Abbeville dist, SC | ||
| Calico Rock | PO | Izard Co, AR | ||
| California | PO | Moniteau Co, MO | ||
| California | PO | Branch Co, MI | ||
| California | PO | Yallobusha, MS | ||
| California | PO | Clermont Co, OH | ||
| California | PO | Floyd Co, GA | ||
| Calland's | PO | Pittsylvania Co, VA | ||
| Callaway's Mills | PO | Franklin Co, VA | ||
| Callensburgh | PV | Toby twp, Clarion Co, PA | ||
| Callensville | PO | Pendleton Co, KY | ||
| Callicoon | PO | Sullivan Co, NY | ||
| Callicoon Sepot | PO | Sullivan Co, NY | ||
| Caln | PO | Chester Co, PA | ||
| Calno | PO | Warren Co. NJ | ||
| Calumet | T | Pike Co, MO | ||
| Calumet Village | PV | Calumet Co, WI | ||
| Calvary | T | Franklin Co, MO | ||
| Calvary | PO | Athens Co, OH | ||
| Calvin | PO | Huntingdon Co, PA | ||
| Calvin | T | Cass Co MI | 624 | |
| Camak | PO | Warren Co, GA | ||
| Camanche | PV, CH | Clinton Co, IA | 454 | seat of justice, water by Mississippi river |
| Camargo | PO | Lancaster Co, PA | ||
| Camargo | PO | Lincoln Co, TN | ||
| Camargo | PO | Monroe Co, MS | ||
| Camargo | PO | Jefferson Co, IN | ||
| Camargo | PO | Montgomery Co, KY | ||
| Cambra | PO | Luzerne Co, PA | ||
| Cambria | PO | Wayne Co, IA | ||
| Cambria | PT | Niagara Co, NY | 2,366 | |
| Cambria | T | Cambria Co, PA | 1,400 | water by Black Lick creek & Little Conneumaugh river |
| Cambria | PO | Hillsdale Co, MI | ||
| Cambridge | PT | Somerset Co, ME | 487 | |
| Cambridge | PT | Lamoille Co, VT | 1,849 | water by Lamoille river |
| Cambridge | City | Middlesex Co, MA | 17,417 | seat of justice |
| Cambridge | PT | Washington Co, NY | 2,593 | water by Hoosick river |
| Cambridge | PO | Lancaster Co, PA | ||
| Cambridge | T | Coos Co, NH | water by Androscoggin river | |
| Cambridge | PV, CH | Dorechester Co, MD | seat of justice, water by Choptauk river | |
| Cambridge | PO | Henry Co, IL | ||
| Cambridge | PT | Lenawee Co, MI | 973 | |
| Cambridge | PO | Dane Co, WI | ||
| Cambridge | PT, CH | Guernsey Co, OH | 2,488 | seat of justice, water by Wills creek |
| Cambridge | PO | Saline Co, MO | ||
| Cambridge | PV | Abbeville dist, SC | ||
| Cambridge | PV | Wayne Co, IN | water by west branch of White Water river | |
| Cambridge | PV | Dallas co, AL | ||
| Cambridgeport | PO | Windham Co, VT | ||
| Cambridgeport | PO | Cambridge city, Middlesex Co, MA | ||
| Camden | PT | Waldo Co, ME | 4,005 | on the Penobscot bay |
| Camden | PT | Oneida C, NY | 2,820 | water by Fish creek |
| Camden | City | Camden Co, NJ | 9,479 | seat of justice, water by Delaware river |
| Camden | PV | Kent Co, DE | water by Jones Creek | |
| Camden | PV | Somers twp, Preble Co, OH | water by Seven mile creek | |
| Camden | PT | Hillsdale Co, MI | 594 | |
| Camden | PV | Shelby Co, KY | ||
| Camden | PV, CH | Benton Co, TN | seat of justice | |
| Camden | PV | Carroll Co, IN | 168 | water by Passianog creek |
| Camden | PV | Madison Co, MS | ||
| Camden | PV, CH | Kirshaw dist, SC | seat of justice, water by Wateree river | |
| Camden | PO | Wilcox Co, AL | ||
| Camden | PO | Camden Co, GA | ||
| Camden | PV | Schuyler Co, IL | 420 | |
| Camden | PV | Ray Co, MO | water by Missouri river | |
| Camden | PV, CH | Camden Co, NC | seat of justice, water by Pasquotauk river | |
| Camden | T | Lorain Co, OH | 1,025 | |
| Camden | PO | Wachitia Co, AR | ||
| Camden Point | PO | Platte Co, MO | ||
| Camden Mills | PO | Rock Island Co, IL | ||
| Camdenville | PO | Anderson Co, KY |