1850 Atlas
| Name | What | Place | Pop | Other |
| Blue Ball | PO | Lancaster Co, PA | ||
| Blue Ball | PO | Cecil Co, MD | ||
| Blue Ball | PO | Butler Co, OH | ||
| Blue Bell | PO | Montgomery Co, PA | ||
| Blue Creek | PO | Adams Co, OH | ||
| Blue Creek | PO | Habersham Co, GA | ||
| Blue Creek | PO | Pike Co, AL | ||
| Blue Creek | PO | Franklin Co, IN | ||
| Blue Creek | T | Adams Co, IN | 425 | |
| Blue Eye | PO | Benton Co, AL | ||
| Blue Grass | PO | Scott Co, IA | ||
| Blue Grass | PO | Fulton Co, IN | ||
| Blue Hill | PT | Hancock Co, ME | 1,939 | |
| Blue Hill | P | Williamson Co, TX | ||
| Blue House | PO | Colleron dist, SC | ||
| Blue Island | PO | Cook Co, IL | ||
| Blue Lick | PO | Clark Co, IN | ||
| Blue Lick | PO | Franklin Co, AL | ||
| Blue Lick Springs | PO | Nicholas Co, KY | ||
| Blue Mound | PO | Dane Co, WI | ||
| Blue Mountain | T | Izard Co, AR | 337 | |
| Blue Plum | PO | Washington Co, TN | ||
| Blue Pond | PO | Cherokee Co, AL | ||
| Blue Ridge | PO | Botetourt Co, VA | ||
| Blue Ridge | PO | Yancey Co, NC | ||
| Blue Ridge | PO | Gilmer Co, GA | ||
| Blue Ridge | PO | Shelby Co, IN | ||
| Blue River | T | Hancock Co, IN | 941 | |
| Blue River | PO | Iowa Co, WI | ||
| Blue River | T | Johnson Co, IN | 964 | |
| Blue Rock | PT | Muskingum Co, OH | 1,476 | water by Muskingum river |
| Blue Spring | PO | Morgan Co, AL | ||
| Blue Spring | PO | Smyth Co, VA | ||
| Blue Spring | PO | Stewart Co, TN | ||
| Blue Spring Grove | PO | Barren Co, KY | ||
| Blue Springs | PO | Jackson Co, MO | ||
| Blue Stone | PO | Tazewell Co, VA | ||
| Blue Sulphur Springs | PO | Green Brier Co, VA | ||
| Blue Wing | PO | Granville Co, NC | ||
| Bluff | PO | Mercer Co, IL | (now called Pope's Mills) | |
| Bluff | PO | Sauk Co, WI | ||
| Bluff Dale | PO | Des Moines Co, IA | ||
| Bluff Grove | PO | Grundy Co, MO | ||
| Bluff Port | PO | Sumter Co, AL | ||
| Bluff Spring | PO | Johnson Co, MO | ||
| Bluff Spring | PO | Attila Co, MS | ||
| Bluff Spring | PO | Talladega Co, AL | ||
| Bluff Spring | PO | Talbot Co, GA | ||
| Bluff Springs | PO | Gibson Co, TN | ||
| Bluffton | PV, CH | Wels Co, IN | 477 | seat of justice |
| Bluffton | PO | Marquette Co, WI | ||
| Bluffton | PO | Beufort Co, SC | ||
| Bluffville | PV | Carroll Co, IL | ||
| Blythe | T | Marion Co, AR | ||
| Blythe | T | Caldwell Co, MO | ||
| Blytheville | PO | Jasper Co, MO | ||
| Boalsburgh | PV | Ferguson Twp, Centre Co, PA | water by Spring creek | |
| Boardtree | PV | Cherokee Co, GA | ||
| Boardham | PV | Giles Co, TN | ||
| Boetia | PO | Mercer Co, OH | ||
| Boeff Prairie | T | Franklin Co, MO | ||
| Bogansville | PO | Union Co, SC | ||
| Bogard | PO | Daviess Co, IN | ||
| Boggess Cross Roads | PO | Meigs Co, TN | ||
| Boggs | PT | Centre Co, PA | 1,923 | |
| Boggs | T | Clearfield Co, PA | 464 | |
| Boggy Depot | PO | Choctaw Nation Co, AR | ||
| Bogles | PO | Iredell Co, NC | ||
| Boght | PO | Albany Co, NY | ||
| Bogue Chitto | PO | Dallas Co, AL | ||
| Bogus Run | PO | Starks Co, IN | ||
| Boiling Spring | PO | Fentress Co, TN | ||
| Boiling Spring | PO | Benton Co, AL | ||
| Boiling Spring | PO | Cumberland Co, PA | ||
| Boilston | PO | Henderson Co, NC | ||
| Bois D'Arc | T | Hempstead Co, AR | ||
| Boke's Creek | PT | Union Co, OH | ||
| Boland's | PO | Itawamba Co, MS | ||
| Bolen's Mills | PO | Vinton Co, OH | ||
| Boligee | PO | Greene Co, AL | ||
| Bolington | PO | Loudoun Co, VA | ||
| Bolivar | PT | Alleghany Co, NY | 708 | |
| Bolivar | T | Westmoreland Co, PA | water by Conemaugh river | |
| Bolivar | PV | Lawrence Twp, Tuscarawas Co, OH | water by Tuscarawas river | |
| Bolivar | PO | Frederick Co, MD | ||
| Bolivar | V | Robeson Co, NC | ||
| Bolivar | PV, CH | Hardeman Co, TN | seat of justice, water by Big Hatchee river | |
| Bolivar | PO | Jackson Co, AL | ||
| Bolivar | PV, CH | Polk Co, MO | seat of justice | |
| Bolivar | PV, CH | Bolivar Co, MS | seat of justice, water by Mississippi river & Lake Bolivar | |
| Bolivar | PT | Poinsett Co, AR | 581 | |
| Bolivia | T | Gasconade Co, MO | ||
| Bolivia | T | Jefferson Co, AR | 686 | |
| Bolster's Mills | PV | Cumberland Co, ME | ||
| Bolton | PT | Chittenden Co, VT | 602 | water by Onion river |
| Bolton | PT | Worcester Co, MA | 1,263 | water by Concord & Nashua rivers |
| Bolton | PT | Tolland Co, CT | 600 | water by Hop river |
| Bolton | PT | Warren Co, NY | 1,147 | water by Schroon river & Lake George |
| Bolton | PO | Williamson Co, IL | ||
| Bolton Depot | PO | Hinds Co, MS | ||
| Boltonville | PO | Orange Co, VT | ||
| Bolt's Fork | PO | Lawrence Co, KY | ||
| Bombay | PT | Franklin Co, NY | 1,963 | water by Little Salmon & St Regis rivers |
| Bon Air Springs | PO | White Co, TN | ||
| Bon Aqua | PO | Hickman Co, TN | ||
| Bon Homme | T | St Genevieve Co, MO | ||
| Bon Homme | T | St Louis Co, MO | ||
| Bon Pas | PO | Richland Co, IL | ||
| Bonaparte | PO | Van Buren Co, IA | ||
| Bonaparte | PO | DuPage Co, IL | ||
| Bond's Point | PO | Christian Co, IL | ||
| Bond's Village | PO | Hampden Co, MA | ||
| Bondville | PO | Bennington Co, VT | ||
| Bondville | PO | Columbia Co, PA | ||
| Bone Creek | PO | Ritchie Co, VA | ||
| Bone Yard | PO | Tishamingo Co, MS | ||
| Bonham | PO | Fannin Co, TX | ||
| Bonn | PO | Washington Co, (no state given) | ||
| Bonne Femme | T | Howard Co, MO | ||
| Bonnet Carre | PV, CH | St John Baptist parish, LA | water by Mississippi river | |
| Bonns | PO | Boone Co, IL | ||
| Bonny Doon | PO | Jefferson Co, GA | ||
| Bono | PT | Lawrence Co, IN | 1,001 | |
| Boone | T | Warwick Co, IN | 2,207 | |
| Boone | T | Harrison Co, IN | ||
| Boone | PO | Ashe Co, NC | ||
| Boone | PT | Franklin Co, MO | ||
| Boone | T | Van Buren Co, MO | ||
| Boonesborough | PV | Madison Co, KY | water by KY river | |
| Boonesborough | PO | Washington Co, AR | ||
| Boonesborough | PV | Washington Co, MD | 854 | |
| Boonesborough | PO | Boone Co, MO | ||
| Boonesborough | PO | Ogle Co, IL | ||
| Boonhill | PO | Johnson Co, NC | ||
| Boon's Creek | PO | Washington Co, TN | ||
| Boon's Grove | PO | Washington Co, AR | ||
| Boon's Hill | PO | Lincoln Co, TN | ||
| Boon's Lick | PT | Howard Co, MO | ||
| Boon's Mills | PO | Franklin Co, VA | ||
| Boonville | PT | Oneida Co, NY | 3,306 | water by Black & Mohawk rivers |
| Boonville | PO | Warwick Co, IN | ||
| Boonville | PV, CH | Scott Co, AR | seat of justice | |
| Boonville | PV, CH | Cooper Co, MO | 1,657 | seat of justice, water by Missouri river |
| Boonville | PO | Brazos Co, TX | ||
| Boothbay | PT | Lincoln Co, ME | 2,504 | water by Sheepscot & Damariscotta rivers |
| Boothsville | PO | Marion Co, VA | ||
| Booton | V | Genesee Co, MI | ||
| Booton's Tan-Yard | PO | Madison Co, VA | ||
| Bordeaux | PO | Abbeville dist, SC | ||
| Bordeaux | PO | Avoyelles parish, LA | ||
| Bordentown | PB | Chesterfield Twp, Burlington Co, NJ | water by Delaware river | |
| Border Spring | PO | Lowndes Co, MS | ||
| Bordley | PV | Union Co, KY | ||
| Borland | PO | Newton Co, AR | ||
| Boroding | PO | Wayne Co, MI | ||
| Boroding | PO | Spafford Twp, Onondaga Co, NY | ||
| Boroding | PO | Avoyelles parish, LA | ||
| Boscawen | PT | Merrimac Co, NH | 2,063 | water by Merrimac & Blackwater rivers |
| Bossardsville | PO | Monroe Co, PA | ||
| Bosserman's Mills | PO | Perry Co, PA | ||
| Bossier Point | PO | Bossier parish, LA | ||
| Bostwick's Mills | PO | Richmond Co, NC | ||
| Boston City | Suffolk Co, MA | |||
| Boston | V | Boston Twp, Erie Co, NY | ||
| Boston | PT | Wayne Co, IN | 959 | |
| Boston | PT | Summit Co, OH | 1,180 | water by Cuyahoga river |
| Boston | PO | Williamson Co, TN | ||
| Boston | PT | Ionia Co, MI | water by Grand river | |
| Boston | PO | Culpepper Co, VA | ||
| Boston | PO | Thomas Co, GA | ||
| Boston | PT | Nelson Co, KY | ||
| Boston | PT | Bowie Co, TX | ||
| Boston | PO | Northampton Co, PA | ||
| Boston | PV | Marengo Co, AL | ||
| Boston | T | Franklin Co, AR | 338 | |
| Boston | PO | Andrew Co, MO | ||
| Boston Corner | PO | Berkshire Co, MA | ||
| Bost's Mills | PO | Cabarras Co, NC | ||
| Botanic Hill | PO | Nsh Co, NC | ||
| Botanic Garden | PO | Perry Co, TN | ||
| Botetourt Springs | PV | Roanoke Co, VA | ||
| Bothelle | PO | Fond du Lac Co, WI | ||
| Bottle Hill | V | Chatham Twp, Morris Co, NJ | ||
| Bouche Saline | PO | Cole Co, MO | ||
| Bouckville | PO | Madison Twp, Madison Co, NY | ||
| Bound Brook | PV | Bridgewater Twp, Somerset Co, NJ | ||
| Bounty Land | PO | Pickens dist, SC | ||
| Bourbonton | PT | Boone Co, MO | ||
| Bourneville | PV | Twin Twp, Ross Co, OH | ||
| Bournsburgh | PV | Randolph Co, MO | ||
| Bovey | T | St Genevieve Co, MO | ||
| Bovina | PT | Delaware Co, NY | 1,316 | water by Little Delaware river |
| Bovina | PO | Warren Co, MS | ||
| Bovina Centre | PO | Bovina Twp, Delaware Co, NY | ||
| Bow | PT | Merrimac Co, NH | 1,055 | water by Turkey & Merrimac rivers |
| Bowdark | PO | Greene Co, MO | ||
| Bowdoin | PT | Lincoln Co, ME | 1,837 | |
| Bowdoin Centre | PO | Bowdoin Twp, Lincoln Co, ME | ||
| Bowdoinham | PT | Lincoln Co, ME | 2,382 | water by Kennebec river |
| Bowdon | PO | Carroll Co, GA | ||
| Bowdon | PO | Talladega Co, AL | ||
| Bowen | T | Madison Co, AR | ||
| Bowden's Prairie | PO | Jones Co, IA | ||
| Bowdenville | PO | Carroll Co, GA | ||
| Bower | PO | Clearfield Co, PA | ||
| Bowerbank | PT | Piscataquis C, ME | 173 | |
| Bower Hill | PO | Washington Co, PA | ||
| Bowers | PO | Southampton Co, VA | ||
| Bower's Mills | PO | Lawrence Co, MO | ||
| Bower's Store | PO | Ashe Co, NC | ||
| Bowersville | PV | Franklin Co, GA | ||
| Bowersville | PO | Greene Co, OH | ||
| Bowlersville | PO | Fluvanna Co, VA | ||
| Bowles | T | Franklin Co, MO | ||
| Bowling Green | PO | Stewart Co, TN | ||
| Bowling Green | PO | Plain Twp, Wood Co, OH | ||
| Bowling Green | PV, CH | Caroline Co, VA | 218 | |
| Bowling Green | T | Licking Co, OH | 1,538 | |
| Bowling Green | PV, CH | Clay Co, IN | water by Eel river | |
| Bowling Green | PO | Fayette Co, IL | ||
| Bowling Green | T | Pettis Co, MO | ||
| Bowling Green | PO | Pike Co, MO | ||
| Bowling Green | V | Oglethorpe Co, GA | ||
| Bowling Green | PV | Warren Co, KY | seat of justice, water by Big Barren river | |
| Bowling Green | T | Marion Co, OH | water by Scioto river | |
| Bowlingsville | PV | Union dist, SC | ||
| Bowman's Mills | PO | Rockingham Co, VA | ||
| Bowmansville | PO | Lancaster Co, PA | ||
| Bowne | PO | Kent Co, MI | ||
| Bowsherville | PO | Crawford Co, OH | ||
| Bowyer's Knob | PO | Fayette Co, PA | ||
| Boxborough | PT | Middlesex Co, MA | 395 | |
| Box Creek | PO | Cherokee Co, TX | ||
| Boxford | PT | Essex Co, MA | 982 | |
| Boxley | PO | Hamilton Co, IN | ||
| Boxville | PV | Montgomery Co, GA | ||
| Boyd's | PO | Columbiana Co, OH | ||
| Boyd's Creek | PO | Sevier Co, TN | ||
| Boyd's Store | PO | Polk Co, MO | ||
| Boyd's Tavern | PO | Albemarle Co, VA | ||
| Boydstown | PT | Penobscott Co, ME | ||
| Boydsville | PO | Weakley Co, TN | ||
| Boydton | PV, CH | Mecklenburgh Co, VA | seat of justice | |
| Boyers Settlement | PO | Buchanan Co, MO | ||
| Boyerstown | PO | Berks Co, PA | ||
| Boykin's Depot | PO | Southampton Co, VA | ||
| Boykin's Depot | PO | Kershaw dist, SC | ||
| Boylston | PT | Worcester Co, MA | 918 | water by Nashua river |
| Boylston | T | Oewego Co, NY | 661 | water by Little Sandy & Trout creeks |
| Boyle's Store | PO | Stokes Co, NC | ||
| Boylston Centre | PO | Worcester Co, MA | ||
| Bozrah | PT | New London Co, CT | 867 | water by Yantic river |
| Bozrahville | PV | Bozrah Twp, New London Co, CT |