1850 Atlas
| Name | What | Place | Pop | Other |
| Collamer | PO | Copiah Co, MS | ||
| Collamer | PO | Chester Co, PA | ||
| Collamer | PO | Windham Co, CT | ||
| Collamer | PO | Cuyahoga Co, OH | ||
| Collamer | PO | Kane Co, IL | ||
| Collamer | PO | Onondaga Co, NY | ||
| Collamer | PO | Whitley Co, IN | ||
| Collamer | PO | Sauk Co, WI | ||
| College | T | Knox Co, OH | ||
| College Corner | PV | Butler Co, OH | ||
| College Green | PO | Cecil Co, MD | ||
| College Hill | PO | Lafayette Co, MS | ||
| College Hill | PO | Hamilton Co, OH | ||
| College Mound | PO | Kaufman Co, TX | ||
| College of St James | PO | Washington Co, MD | ||
| Collegeville | PV | Saline Co, AR | ||
| Collettsville | PV | Caldwell Co, NC | ||
| Colliers | PO | Edgefield dist, SC | ||
| Collierstown | PV | Rockbridge Co, VA | water by Collier creek | |
| Colliersville | PO | Shelby Co, TN | ||
| Collins | PT | Erie Co, NY | 4,001 | water by Cattaraugus creek |
| Collins | PO | Columbia Co, FL | ||
| Collins Centre | PO | Collins twp, Erie Co, NY | ||
| Collins Depot | PO | Hampden Co, MA | ||
| Collins Settlement | PO | Lewis Co, VA | ||
| Collinsville | PV | Canton twp, Hartford Co, CT | water by Farmington river | |
| Collinsville | PV | West Turin twp, Lewis Co, NY | ||
| Collinsville | V | Huntingdon Co, PA | ||
| Collinsville | PV | Milford twp, Butler Co, OH | ||
| Collinsville | PV | Madison Co, IL | ||
| Collirene | PO | Lowdes Co, AL | ||
| Colomo | PV, CH | El Dorado, CA | seat of justice | |
| Collomsville | PO | Lycoming Co, PA | ||
| Colly Swamp | PO | Bladen Co, NC | ||
| Colonna | PO | Cherokee Co, AL | ||
| Colon | PT | St Joseph Co, MI | 846 | |
| Colonel's Fork | PO | Pickens dist, SC | ||
| Colony | PO | Knox Co, MO | ||
| Colosse | PV | Mexico twp, Oswego Co, NY | ||
| Colquitt | PO | Montgomery Co, GA | ||
| Colton | PO | St Lawrence Co, NY | ||
| Colt's Neck | PV | Shrewsbury twp, Monmouth Co, NJ | ||
| Columbia | PT | Washington Co, ME | water by Pleasant river | |
| Columbia | PT | Coos Co, NH | 762 | water by Connecticut river |
| Columbia | PT | Tolland Co, CT | 876 | water by tributary of Willimantic river |
| Columbia | PT | Herkimer Co, NY | 2,081 | water by tributaries of Unadilla & Susquehanna rivers |
| Columbia | PB | West Hampfield twp, Lancaster Co, PA | 4,140 | water by Susquehanna river & canal |
| Columbia | PV | Warren Co, NJ | ||
| Columbia | T | Bradford Co, PA | 1,383 | |
| Columbia | PT | Jackson Co, MI | 1,142 | |
| Columbia | PV, CH | Fluvanna Co, VA | seat of justice, water by James & Rivanna rivers | |
| Columbia | PV, CH | Tyrell Co, NC | seat of justice, water by Scoupernong creek | |
| Columbia | PV | Henry Co, AL | ||
| Columbia | PV, CH | Marion Co, MS | seat of justice, water by Pearl river | |
| Columbia | PV, CH | Chicot Co, AR | water by Mississippi river | |
| Columbia | PV, CH | Maury Co, TN | seat of justice, water by Duck river, seat of Jackson College | |
| Columbia | V | Whitley Co, IN | former seat of justice, water by Blue river | |
| Columbia | PV, CH | Adair Co, KY | seat of justice, water by Russell's creek | |
| Columbia | PV | Fayette Co, IN | 889 | |
| Columbia | PV | Monroe Co, IL | ||
| Columbia | PV, CH | Caldwell parish, LA | seat of justice, water by Wachita river | |
| Columbia | PT | Hamilton Co, OH | 2,413 | water by Little Miami & Ohio rivers |
| Columbia | T | Lorain Co, OH | 1,236 | water by Rocky river |
| Columbia | T | Gibson Co, OH | ||
| Columbia | T | Meigs Co, OH | 895 | water by tributaries of Leading creek |
| Columbia | T | Randolph Co, AR | ||
| Columbia | V | West Hempfield twp, Lancaster Co, PA | 4,140 | |
| Columbia | PV | Richland dist, SC | 6,060 | seat of justice, State Capital |
| Columbia Centre | PO | Licking Co, OH | ||
| Columbia Cross Roads | PO | Bradford Co, PA | ||
| Columbia Furnace | PV | Shenandoah Co, VA | ||
| Columbiana | PV, CH | Shelby Co, AL | seat of justice | |
| Columbiana | PO | Columbiana Co, OH | ||
| Columbia Grove | PO | Lunenburgh Co, VA | ||
| Columbiaville | V | Stockport twp, Columbia Co, NY | water by Claverack & Kinderhook creeks | |
| Columbus | PT | Chenango Co, NY | 1,381 | water by Unadilla river |
| Columbus | PV | Mansfield twp, Burlington Co, NY | ||
| Columbus | PO | Warren Co, PA | ||
| Columbus | PT | St Clair Co, MD | 377 | |
| Columbus City | PO | Muscogee Co, GA | seat of justice, water by Chattahoochee river | |
| Columbus | PV | Hempstead Co, AR | ||
| Columbus | PV | Polk Co, TN | water by Hiawasee river | |
| Columbus | PV | Adams Co, IL | 1,541 | |
| Columbus | PV, CH | Hickman Co, KY | seat of justice, water by Mississippi river | |
| Columbus | PV, CH | Bartholomew Co, IN | 1,008 | seat of justice, water by East Fork of White river |
| Columbus | PT | Warren Co, PA | 1,278 | |
| Columbus | PO | Columbia Co, FL | ||
| Columbus | PO | Johnson Co, MO | ||
| Columbus | PO | Colorado Co, TX | ||
| Columbus | PO | Columbia Co, WI | ||
| Columbus | City | Lowndes Co, MS | 9,611 | seat of justice |
| Columbus | City | Franklin Co, OH | 16,893 | seat of justice, State Capital |
| Columbus City | PO | Louisa Co, IA | ||
| Colvin's Tavern | PO | Culpepper Co, VA | ||
| Colusi | PO | Coiusi Co, CA |