1850 Atlas
| Barnard | T | Piscataquis Co, ME | 181 | |
| Barnard | PT | Windsor Co, VT | 1,647 | water by White & Queechee rivers |
| Barnardsville | PV | Roane Co, TN | ||
| Barnegat | V | Poughkeepsie Twp, Dutchess Co, NY | water by Hudosn river | |
| Barnegat | PV | Stafford Twp, Ocean Co, NJ | ||
| Barnerville | PO | Schoharie Co, NY | ||
| Barnes | PO | Richland, OH | ||
| Barnes | PO | Dallas Co, AL | ||
| Barnes' Bridge | PO | Richmond Co, NC | ||
| Barnes' Corner | PO | Lewis Co, NY | ||
| Barnes" Cross Roads | PO | Dale Co, AL | ||
| Barnesville | PV | Pike Co, GA | ||
| Barnesville | PO | Montgomery Co, IN | ||
| Barnesville | V | Warren Twp, Belmont Co, OH | 823 | |
| Barnesview | V | Clark Co, MO | water by Wisconda river | |
| Barnet | PT | Caledonia Co, VT | 2,561 | water by Connecticut river |
| Barnett's Creek | PO | Ohio Co, KY | ||
| Barnett's Mills | PO | Fauquier Co, VA | ||
| Barney's | PO | Phillips Co, AR | ||
| Barnhart's Mills | PO | Butler Co, PA | ||
| Barnsborough | PO | Gloucester Co, NJ | ||
| Barnstable | PT | Barnstable Co, MA | 4,901 | seat of justice, on south side Barnstable bay, also listed as being a township not a town |
| Barnstead | PT | Belknap Co, NH | 1,848 | |
| Barnwell | PV, CH | Barnwell Dist, SC | seat of justice, water by Turkey creek & Great Salkahatchie river | |
| Barracksville | PO | Marion Co, VA | ||
| Barre | PT | Washington Co, VT | 1,845 | water by Onion river |
| Barre | T | Huntingdon Co, PA | 1,271 | |
| Barre | PT | Worcester Co, MA | 2,976 | water by Ware river |
| Barre | PT | Orleans Co, NY | 4,186 | on Erie Canal |
| Barre Centre | PV | Barre Twp, Orleans Co, NY | ||
| Barre Forge | PO | Huntingson Co, PA | ||
| Barre Plains | PO | Worcestor Co, MA | ||
| Barren | PO | Harrison Co, IN | ||
| Barren | PO | Williamson Co, TN | ||
| Barren Creek Springs | PO | Somerset Co, IN | ||
| Barren Grove | PO | Bureau Co, IL | ||
| Barren Hill | PO | Montgomery Co, PA | ||
| Barren Hill | PO | Henry Co, TN | ||
| Barren Plain | PO | Robertson Co, TN | ||
| Barren Ridge | PO | Vanzant Co, TX | ||
| Barrettsville | PV | Lumpkin Co, GA | water by Etowah river | |
| Barreville | PO | McHenry Co, IL | ||
| Barrington | PT | Strafford Co, NH | 1,752 | |
| Barrington | PT | Bristol Co, RI | 795 | |
| Barrington | PT | Yates Co, NY | 1,550 | water by Crooked Lake |
| Barrington | PT | Cook Co, IL | 676 | |
| Barrowdale | PV | Fairfield Dist, SC | ||
| Barry | PO | Frederick Co, MD | ||
| Barry | PT | Schuylkill Co, PA | water by Deep creek | |
| Barry | PO | Cuyahoga Co, OH | ||
| Barry | PO | Lawrence Co, AR | ||
| Barry | PV | Sandstone Twp, Jackson Co, MI | water by Sandstone creek | |
| Barry | PO | Pike Co, IL | ||
| Barry | PO | Clay Co, MO | ||
| Barry | T | Barry Co, MI | 478 | |
| Barry's Bridge | PO | Lumenburgh Co, VA | ||
| Barryton | PO, CH | Washington Co, AL | seat of justice | |
| Barryton | PO | Choctaw Co, AL | ||
| Barrytown | PO | Redhook Twp, Dutchess Co, NY | water by Hudson river | |
| Barryville | PO | Forrestburg Twp, Sullivan Co, NY | ||
| Barryville | PO | Stark Co, OH | ||
| Barryville | PO | Fayette Co, GA | ||
| Bart | PT | Lancaster Co PA | 2,337 | water by Octarara creek |
| Barter Brook | PO | Augusta Co, VA | ||
| Bartholomew | T | Jefferson Co, AR | 247 | |
| Bartholomew | PO | Chicot Co, AR | ||
| Bartlett | T | Jefferson Co, PA | ||
| Bartlett | PT | Coos Co, NH | 761 | water by Saco river |
| Bartlett | PO | Wesley Twp, Washington Co, OH | ||
| Barton | PT | Orleans Co, VT | 987 | water by Barton river |
| Barton | PT | Lowndes Co, MS | ||
| Barton | PT | Tioga Co, NY | 3,522 | water by Susquehannah & Cheming rivers |
| Barton | PO | Washington Co, WI | ||
| Barton Hill | PO | Schoharie Co, NY | ||
| Barton's | PO | Lauderdale Co, AL | ||
| Barton's Creek | PO | Dickson Co, TN | ||
| Barton's Landing | PO | Orleans Co, VT | ||
| Bartonsville | PO | Windham Co, VT | ||
| Bartonsville | PO | Monroe Co, PA | ||
| Bascobel | PV | Jackson Co, GA | ||
| Bascom | PO | Seneca Co, OH | ||
| Base Lake | PO | Washtenaw Co, MI | ||
| Basham | PO | Meigs Co, OH | ||
| Basham's Gap | PO | Morgan Co, AL | ||
| Basham's Mills | PO | Johnson Co, AR | ||
| Bashi | PO | Clark Co, AL | ||
| Basin Harbor | V | Ferrisburgh Twp, Addison Co, VT | on Lake Champlain | |
| Baskingridge | PV | Somerset Co, NJ | ||
| Bass River Hotel | PO | Little Egg Harbor Twp, Burlington Co, NJ | ||
| Bassnettsville | PO | Marion Co, VA | ||
| Bassville | PO | Madison Co, MS | ||
| Bastrop | PO | Morehouse parish, LA | ||
| Bastrop | PO | Bastrop Co, TX | ||
| Batavia | PT | Genesee Co, NY | 4, 461 | water by Tonawanda creek |
| Batavia | PV, CH | Batavia Twp, Genesee Co, NY | seat of justice | |
| Batavia | PT | no county listed, OH | 2,791 | water by Little Miami river |
| Batavia | T | Geauga Co, OH | water by Cuyahoga & Grand rivers | |
| Batavia | PT | Kane Co, IL | 892 | |
| Batavia | PT | Branch Co, MI | 724 | |
| Batavia Store | PO | Houston Co, GA | ||
| Batesville | PO | Habersham Co, GA | ||
| Batesville | PV | Guernsey Co, OH | ||
| Batesville | PV, CH | Independence Co, AR | 848 | |
| Bath | PT | Lincoln Co, ME | 8,020 | on west bank of Kennebec river, 12 miles from the ocean |
| Bath | PT | Grafton Co, NH | 1,574 | water by Connecticut & Ammonoosuck rivers |
| Bath | PT, CH | Steuben Co, NY | 6,185 | water by Coshocton river |
| Bath | V | Bath Twp, Steuben Co, NY | ||
| Bath | V | Greenbush Twp, Rensselaer Co, NY | opposite Albany on the Hudson river | |
| Bath | PV | Northampton Co, PA | ||
| Bath | PT | Summit Co, OH | 1,400 | |
| Bath | PV, CH | Bath Co, VA | seat of justice | |
| Bath | PV | Beaufort Co, NC | ||
| Bath | PV | Mason Co, IL | ||
| Bath | T | Allen Co, OH | 1,509 | |
| Bath | T | Greene Co, OH | 1,647 | water by Mad river |
| Bath | V | Richmond Co, GA | ||
| Bath | PO | Mason Co, IL | ||
| Bath Alum | PO | Bath Co, VA | ||
| Bath Springs | PO | Decatur Co, TN | ||
| Bathes | V | Jefferson Co, GA | water by Reedy creek | |
| Baton Rouge | City | East Baton Rouge parish, LA | 3,905 | on the Mississippi river |
| Batson's | PO | Humphreys Co, TN | ||
| Battenville | PV | Greenwich Twp, Washington Co, NY | ||
| Battle Creek | PO | Battle Creek Twp, Calhoun Co, MI | 1,807 | water by Battle Creek & Kalamazoo rivers |
| Battle Creek | PO | Marion Co, TN | ||
| Battle Ground | PO | Tippecanoe Co, IN | ||
| Battleborough | PV | Edgecomb Co, NC | ||
| Battlefield | PO | Lauderdale Co, MS | ||
| Baughman | T | Wayne Co, OH | 1,727 | water by Newman's Creek |
| Baumstown | PV | Berks Co, PA | ||
| Bavington | PO | Washington Co, PA | ||
| Baxter's | PO | Muskingum Co, OH | ||
| Bay | T | Ottowa Co, OH | water by Sandusky river & Mud Creek bay | |
| Bay Creek | PO | Laurens Dist, SC | ||
| Bay Hundred | PO | Talbot Co, MD | ||
| Bay Mount | PO | Greene Co, TN | ||
| Bay River | PO | Craven Co, NC | ||
| Bayard | PO | Shelby Co, KY | ||
| Bayou Chicot | PV | Calcasieu parish, LA | ||
| Bayou Gould | PV | Iberville parish, LA | ||
| Bayou Mason | T | Chicot Co, AR | ||
| Bayou Pierre | PO | DeSoto parish, LA | ||
| Bayou Rouge | PO | Avoyelles parish, LA | ||
| Bazetta | PT | Trumbill Co, OH | 1,302 |