1850 Atlas
| Name | What | Place | Pop | Other |
| Babcock Hill | PO | Oneida Co, NY | ||
| Babcock's Grove | PO | Dupage Co, IL | ||
| Babylon | PV | Huntington Twp, Suffolk Co, NY | on Long Island | |
| Bachelor's Grove | PO | Rock Co, VA | ||
| Bachelor's Hall | PO | Pittsylvania Co, VA | ||
| Bachelor's Retreat | PO | Pickens Dist, SC | ||
| Bachman's Mills | PO | Carroll Co, MD | ||
| Back Creek | PO | Somerset Co, MD | ||
| Back Creek Valley | PO | Frederick Co, VA | ||
| Bacon Castle | PO | Surry Co, VA | ||
| Bad-axe | PO | Crawford Co, WI | ||
| Badger | PO | Fond du Lac Co, WI | ||
| Bagdad | PO | Smith Co, TN | ||
| Bagdad | PO | Lafayette Co, MO | ||
| Bailey Creek | PO | Tioga Co, PA | ||
| Baileysburgh | PO | Perry Co, PA | ||
| Baileysburgh | PV | Surry Co, VA | ||
| Bailey's Creek | PO | Osage Co, MO | ||
| Bailey's Four Corners | PO | Greene Co, NY | ||
| Bailey's Landing | PO | Lincoln Co, MO | ||
| Bailey' Mills | PO | Jefferson Co, FL | ||
| Baileyville | PT | Washington Co, ME | 431 | water by St Croix river |
| Baileville | PO | Centre Co, PA | ||
| Bainbridge | PT | Chenango Co, NY | 3,338 | water by Susquehanna river |
| Bainbridge | PV | West Donnegal Twp, Lancaster Co, PA | 503 | water by Susquehanna river |
| Bainbridge | PO | Christian Co, KY | ||
| Bainbridge | PV | Ross Co, OH | 626 | water by Paint creek |
| Bainbridge | T | Geauga Co, OH | 1,014 | water by Chagrus river |
| Bainbridge | T | Berrien Co, MI | ||
| Bainbridge | PV, CH | Decatur Co, GA | seat of justice, water by Flint river | |
| Bainbridge | PV | Putnam Co, IN | water by Walnut fork of Eel river | |
| Bainbridge | PV | Williamson Co, IL | water by Big Muddy Creek | |
| Bainbridge | V | Cape Girardeau Co, MO | water by Mississippi river | |
| Bainbridge | PO | Robertson Co, TN | ||
| Bainbridge Centre | PO | Bainbridge Twp, Chenango Co, NY | ||
| Bairdstown | PT, CH | Nelson Co, KY | seat of justice, water by Beech Fork of Sat river | |
| Baiting Hollow | PV | Riverhead Twp, Suffolk Co, NY | on Long Island | |
| Baker's | PO | Jackson Twp, Champaign Co, OH | ||
| Baker's | PO | Lenawee Co, MI | ||
| Baker's Corners | PO | Walworth Co, WI | ||
| Bakersfield | PT | Franklin Co, VT | 1,593 | water by Missisque river |
| Baker's Gap | PO | Johnson Co, TN | ||
| Baker's Run | PO | Hardy Co, VA | ||
| Bakersville | PO | Litchfield Co, CT | ||
| Bakersville | PO | Coshocton Co, OH | ||
| Bakersville | PO | Washington Co, MD | ||
| Bakersville | PO | Somerset Co, PA | ||
| Bakerstown | PV | Alleghany Co, PA | ||
| Bakersville | PV | Yancey Co, NC | ||
| Balcony Falls | PO | Rockbridge Co, VA | water by James river | |
| Bald Creek | PO | Yancey Co, NC | ||
| Bald Eagle | PO | Bath Co, KY | ||
| Bald Eagle | T | Clinton Co, PA | 683 | |
| Bald Eagle | PO | York Co, PA | ||
| Bald Hill | PO | Norfolk Co, MA | ||
| Bald Hill | PO | Muscogee Co, GA | ||
| Bald Mount | PO | Luzerne Co, PA | ||
| Baldwin | PO | Butler Co, PA | ||
| Baldwin | T | Cumberland Co, ME | 1,100 | water by Saco river |
| Baldwin | P | Chemung Co, NY | ||
| Baldwin | P | Butler Co, PA | ||
| Baldwin | V | Hinds Co, MS | water by Big Black river | |
| Baldwinsville | PV | Templeton Twp, Worcester Co, MA | ||
| Baldwinsville | PV | Lysander Twp, Onondaga Co, NY | ||
| Baldwinsville | PV | Scott Co, MO | ||
| Baldwinsville | PO | Edgar Co, IL | ||
| Bale's Branch | PO | Green Co, TN | ||
| Baley | T | Benton Co, AR | ||
| Balize | V | Plaquemine Parish, LA | below New Orleans, near mouth of Mississippi river | |
| Ball Ground | PO | Cherokee Co, GA | ||
| Ball Mountain | PO | Oakland Co, MI | ||
| Ball Play | PO | Monroe Co, TN | ||
| Ballard Vale | PO | Essex Co, MA | ||
| Ballard's Bridge | PO | Chowan Co, NC | ||
| Ballardsville | V | Logan Co, VA | ||
| Ballardsville | PV | Oldham Co, KY | ||
| Ballardsville | PO | Boone Co, VA | ||
| Ballew's Ferry | PO | St Landre Parish, LA | ||
| Ball's Pond | PO | Fairfield Co, CT | ||
| Ballsville | PO | Powhattan Co, VA | ||
| Ballston | PT | Saratoga Co, NY | 2,259 | water by Ballston or Long Lake |
| Ballston Centre | PV | Ballston Twp, Saratoga Co, NY | ||
| Ballston Spa | PV | Milton Twp, Saratoga Co, NY | seat of justice, water by Kayaderosseras crek | |
| Ballstown | PO | Ripley Co, IN | ||
| Ballville | T | Sandusky Co, OH | 1,556 | water by Sandusky river |
| Baltimore | City | Baltimore Co, MD | 166, 303 | |
| Baltimore | PV | Liberty Twp, Fairfield Co, OH | 492 | on Ohio canal |
| Baltimore | T | Windsor Co, VT | 124 | |
| Baltimore | PO | Barry Co, MI | ||
| Baltimore | PV | Warren Co, IN | water by Wabash river | |
| Baltimore | PO | Jo-Daviess Co, IL | ||
| Baltimore Hundred | Sussex Co, DE | 2,748 | ||
| Bancroft | PO | Hampshire Co, MA | ||
| Bangall | PO | Dutchess Co, NY | ||
| Bangor | PT | Franklin Co, NY | 2,160 | water by Salmon river |
| Bangor | PO | Richland Co, OH | ||
| Bangor City | City | Penobscot Co, ME | 14,432 | seat of justice |
| Bank Lick | PO | Kenton Co, KY | ||
| Banksville | PO | Fairfield Co, CT | ||
| Bankston | PO | Choctaw Co, MS | ||
| Bankton | PO | Saline Co, IL | ||
| Banner | PO | Kane Co, IL | ||
| Banner | PO | Lafayette Co, MS | ||
| Bannerman | PO | New Hanover Co, NC | ||
| Bantam | PO | Clermont Co, OH | ||
| Bantam Falls | PO | Litchfield Co, CT | ||
| Baptist Mission | PO | Cherokee Nation Co, AR | ||
| Baptistown | PV | Kingwood Twp, Hunterdon Co, NJ | ||
| Baptist Valley | PO | Tazewell Co, VA | ||
| Baraboo | PO | Sauk Co, WI | ||
| Barber's | PO | Columbia Co, FL | ||
| Barber's Corners | PO | Will Co, IL | ||
| Barber's Creek | PO | Jackson Co, GA | ||
| Barber's Cross Roads | PO | Isle of Wright Co, VA | ||
| Barbersville | PO | Jefferson Co, IN | ||
| Barbour | PO | Choctaw Co, AL | ||
| Barbour's Mills | PO | Lycoming Co, PA | ||
| Barbourville | PO | Tompkins Twp, Delaware Co, NY | ||
| Barboursville | PV | Orange Co, VA | ||
| Barboursville | PV, CH | Knox Co, KY | 184 | seat of justice, water by Cumberland river |
| Barboursville | V, CH | Cabell Co, VA | seat of justice, water by Great Guyandot river | |
| Barcelona | PV | Westfield Twp, Chautauque Co, NY | on Lake Erie | |
| Barcelona | PO | Bloomfield Twp, Richland Co, OH | ||
| Barclay | PO | Whiteside Co, IL | ||
| Barclaysville | PO | Cumberland Co, NC | ||
| Bardstown | PT | Nelson Co, KY | (see Bairdstown) | |
| Baresville | PO | Monroe Co, OH | ||
| Bareville | PO | Lancaster Co, NC | ||
| Bargaintown | PV | Egg Harbor Twp, Atlantic Co, NJ | ||
| Barges | PO | Wilcox Co, AL | ||
| Barhamsville | PO | New Kent Co, VA | ||
| Bar Harbor | PO | Hancock Co, ME | ||
| Baring | PT | Washington Co, ME | 380 | water by St Croix river |
| Bark Camp | PO | Burke Co, GA | ||
| Bark River | PT | Jefferson Co, WI | ||
| Barker | T | Broome Co, NY | 1,456 | water by Tioughnioga creek |
| Barker's | PO | Greene Co, PA | ||
| Barker's Settlement | PO | Randolph Co, VA | ||
| Barkersville | PO | Saratogo Co, NY | ||
| Barkersville | PO | Marion Co, IA | ||
| Barkhamstead | PT | Litchfield Co, CT | 1,524 | water by Farmington river |
| Barksdale | PO | Halifax Co, VA | ||
| Barlow | PT | Washington Co, OH | 1,662 |