1850 Atlas
| Name | What | Place | Pop | Other |
| Coal | T | Northumberland Co, PA | 146 | |
| Coal Brook | T | Clinton Co, PA | 326 | |
| Coal Grove | PO | Lawrence Co, OH | ||
| Coal Hill | PO | Goochland Co, VA | ||
| Coal Mountain | PO | Forsyth Co, GA | ||
| Coal Port | PO | Indiana Co, PA | ||
| Coal River Marshes | PO | Fayette Co, VA | ||
| Coal Run | PO | Washington Co, OH | ||
| Coal Valley | PO | Alleghany Co, PA | ||
| Coalmouth | PO | Kanawha Co, VA | ||
| Coates' Tavern | PO | York dist, SC | ||
| Coatesville | PO | Hendrickson Co, IN | ||
| Coatsville | PV | Chester Co, PA | water by west branch of Brandywine creek | |
| Cobalt | PO | Middlesex Co, CT | ||
| Cobb | PO | Jackson Co, IA | ||
| Cobleskill Centre | PO | Schoharie Co, NY | ||
| Cobb's Fork | PO | Decatur Co, IN | ||
| Cobb's Mills | PO | Cherokee Co, AL | ||
| Cobbsville | PO | Telfair Co, GA | ||
| Coberly's | PO | Allen Twp, Union Co, OH | ||
| Cobham | PO | Albermarle Co, VA | ||
| Cobleskill | PT | Schoharie Co, NY | 2,229 | water by Cobbeskill creek |
| Coburn's Store | PO | Mecklenburg Co, NC | ||
| Cocalico | PO | Lancaster Co, PA | ||
| Cochecton | PT | Sullivan Co, NY | 1,671 | water by Delaware river |
| Cochesett | PO | Plymouth Co, MA | ||
| Cochituate | PO | Middlesex Co, MA | ||
| Cochran | T | Macon Co, MO | ||
| Cochran's Cross Roads | PO | Harris Co, GA | ||
| Cochran's Grove | PV | Shelby Co, IL | ||
| Cochran's Landing | PO | Monroe Co, OH | ||
| Cochran's Mills | PO | Pickens Co, AL | ||
| Cochransville | PV | Chester Co, PA | ||
| Cochransville | PO | Marshall Co, TN | ||
| Cochranton | PO | Salt Rock twp, Marion Co, OH | ||
| Cockeysville | PO | Baltimore Co, MD | ||
| Cockrum | PO | DeSoto Co, MS | ||
| Coddingville | PO | Medina Co, OH | ||
| Codorus | PV | Old Codorus twp, York Co, PA | water by Codorus creek | |
| Coelk | PO | Livingston parish, LA | ||
| Coe Ridge | PO | Cuyahoga Co, OH | ||
| Coesse | PO | Whitley Co, IN | ||
| Coeyman's | PT | Albany Co, NY | 3,050 | water by Coeyman's creek |
| Coeyman's Hollow | PO | Coeyman's twp, Albany Co, NY | ||
| Cofer | PO | Hardin Co, KY | ||
| Coffadeliah | PO | Nesboba Co, MS | ||
| Coffee | PO | Clay Co, IN | ||
| Coffee Corner | PO | Coffee Co, AL | ||
| Coffee Creek | PO | Porter Co, IN | ||
| Coffee Landings | PO | Hardin Co, TN | ||
| Coffee Run | PO | Huntingdon Co, PA | ||
| Coffeeville | PV | Clark Co, AL | water by Tombigbee river | |
| Coffeeville | PV, CH | Yallabusha Co, MS | seat of justice, water by Turkey creek | |
| Coffin's Grove | PO | Delaware Co, IA | ||
| Coghill | PO | McMinn Co, TN | ||
| Cogswell | PO | McHenry Co, IL | ||
| Cohasset | PT | Norfolk Co, MA | 1,775 | water by Atlantic ocean |
| Cohocton | PO | Steuben Co, NY | ||
| Cohoes | PV | Watervliet twp, Albany Co, NY | 4,229 | water by Mohawk river |
| Cohuttah Springs | PO | Murray Co, GA | ||
| Coila | PO | Carroll Co, MS | ||
| Coila | PO | Washington Co, NY | ||
| Coinjock | PO | Currituck Co, NC | ||
| Cottsville | PT | Trumbill Co, OH | water by Beaver river & Beaver canal | |
| Coker Creek | PO | Monroe Co, TN | ||
| Cokesburgh | not listed | Hunterden Co, NJ | ||
| Cokesbury | PV | Abbeville dist, SC | ||
| Colaparchee | PO | Monroe Co, GA | ||
| Colbert | V | Lowndes Co, MS | water by Tombigbee river | |
| Colbyville | PV | Clarke Co, KY | ||
| Colchester | PT | Chittenden Co, VT | 2,577 | water by Lake Champlain & Onion river |
| Colchester | PT | New London Co, CT | 1,468 | water by Salmon river |
| Colchester | PT | Delaware Co, NY | 2,184 | water by Papacton branch of Delaware river |
| Cold Brook | V | Worcester Co, MA | water by Cold brook | |
| Cold Brook | PV | Russia twp, Herkimer Co, NY | water by Cold brook | |
| Cold Brook | PO | Warren Co, IL | ||
| Colden | PT | Erie Co, NY | 1,344 | water by Cazenovia creek |
| Coldenham | PO | Newburgh twp, Orange Co, NY | ||
| Cold Run | PO | Cass Co, GA | ||
| Cold Spring | PO | Fairfield Co, CT | ||
| Cold Spring | PV | Phillipstown twp, Putnam Co, NY | water by Hudson river | |
| Cold Spring | T | Cattaraugus Co, NY | 591 | water by Alleghany river & Cold Spring creek |
| Cold Spring | PV | Lower twp, Cape May Co, NJ | ||
| Cold Spring | PO | Edgefield dist, SC | ||
| Cold Spring | PO | Wilkinson Co, MS | ||
| Cold Spring | PO | Campbell Co, KY | ||
| Cold Spring | PO | Shelby Co, IL | ||
| Cold Spring | PO | Pottawatomie Co, IA | ||
| Cold Spring | PO | Harrison Co, OH | ||
| Cold Spring | PO | Polk Co, TX | ||
| Cold Spring | PO | Jefferson Co, WI | ||
| Cold Spring Harbor | PV | Oyster Bay & Huntington twps, Queens & Suffolk Co's, NY | water by Cold Spring Harbor | |
| Cold Stream | PV | Hampshire Co, VA | water by Great Cacapon river | |
| Cold Water | PT, CH | Branch Co, MI | 2,166 | seat of justice, water by Coldwater river |
| Cold Water | PO | Elbert Co, GA | ||
| Cold Water | PO | Marshall Co, MS | ||
| Cold Water | PO | Wayne Co, MO | ||
| Cold Water | PO | Mercer Co, OH | ||
| Cold Water | PO | Delaware Co, IA | ||
| Cold Well | PO | White Co, AR | ||
| Cole | T | Benton Co, MO | ||
| Colebath | T | Clarke Co, AR | 297 | |
| Colesbrook | PT | Litchfield Co, CT | 1,317 | water by Colebrook river |
| Colesbrook | PT | Coos Co, NH | 908 | water by Connecticut & Mohawk rivers & Beaver brook |
| Colesbrook | T | Ashtabula Co, OH | 688 | water by Rock & Mosquito creeks |
| Colesbrook Dale | PT | Berks Co, PA | 1,108 | |
| Colesbrook River | PO | Colebrook twp, Litchfield Co, CT | ||
| Cole Camp | PO | Benton Co, MO | ||
| Cole Creek | PO | Fountain Co, IN | ||
| Cole Creek | T | Montgomery Co, IN | 1,517 | |
| Coleman's Cross Roads | PO | Edgefield dist, SC | ||
| Colemansville | PO | Harrison Co, KY | ||
| Colerain | PT | Franklin Co, MA | 1,785 | water by tributary of Deerfield river |
| Colerain | T | Ross Co, OH | 986 | |
| Colerain | PT | Lancaster Co, PA | 1,602 | |
| Colerain | T | Bedford Co, PA | 1,281 | |
| Colerain | PT | Hamilton Co, OH | 3,125 | water by Great Miami river |
| Colerain | PT | Belmont Co, OH | 1,366 | |
| Colerain | PV | Bertie Co, NC | water by Chowan river | |
| Colerain | PO | Jackson Co, AR | ||
| Colerain Forge | PV | Huntingdon Co, PA | water by Spruce creek | |
| Colesburgh | PO | Potter Co, PA | ||
| Colesburgh | PO | Delaware Co, IA | ||
| Cole's Creek | PO | Columbia Co, PA | ||
| Cole's Ferry | PO | Wilson Co, TN | ||
| Cole's Mills | PO | Delaware Co, OH | ||
| Colesville | PT | Broome Co, NY | 3,061 | water by Susquehanna river |
| Colesville | PO | Sussex Co, NJ | ||
| Colesville | PO | Montgomery Co, MD | ||
| Colesville | PO | Stokes Co, NC | ||
| Coleta | PO | Talladega Co, AL | ||
| Coleville | T | Ashtabula Co, OH | 688 |