1850 Atlas
| Name | What | Place | Pop | Other |
| Asbury | PO | Perry Co, OH | ||
| Asbury | PO | Fayette Co, AL | ||
| Asbury | PO | Montgomery Co, TN | ||
| Asbury | PO | La Salle Co, IL | ||
| Asbury | PO | Troup Co, GA | ||
| Ash | T | Monroe Co, MI | 1,229 | |
| Ashapoo Ferry | PO | Colleton Dist, SC | ||
| Ashborough | PO, CH | Randolph Co, NC | 7,393 | seat of justice |
| Ashburham | PT | Worcester Co, MA | 1,875 | water by Miller's river |
| Ashburham Depot | PO | Worcester Co, MA | ||
| Ashby | PT | Middlesex Co, MA | 1,208 | |
| Ashby | PO | Coles Co, IL | ||
| Ashbysburgh | PO | Hopkins Co, KY | ||
| Ash Creek | PO | Oktibbeha Co, MS | ||
| Ashery | PO | Hancock Co, OH | ||
| Ashe's Creek | PO | Spencer Co, KY | ||
| Ashfield | PT | Franklin Co, MA | 1,394 | water by Deerfield & Wostfield rivers |
| Ashford | PT | Windham Co, CT | 1,925 | |
| Ashford | PT | Cattarangus Co, NY | 1,658 | water by Cattarabgus creek |
| Ash Grove | PO | Greene Co, MO | ||
| Ash Grove | PO | Iroquois Co, IL | ||
| Ashpum | PO | Washington Co, WI | ||
| Ashland | PO | Bertie Co, NC | ||
| Ashland | PO | Union Co, KY | ||
| Ashland | PV | Ashland Co, OH | 1,344 | |
| Ashland | PO | Forsyth Co, GA | ||
| Ashland | PO | Wayne Co, TN | ||
| Ashland | PT | Greene Co, NY | 1,290 | |
| Ashland | PT | Middlesex Co, MA | 1,394 | |
| Ashland | PO | Wapello Co, IA | ||
| Ashland | PO | DeSoto Parish, LA | ||
| Ashland | PO | Henry Co, IN | ||
| Ashland | PO | Wayne Co, PA | ||
| Ashland Furnace | PO | Cambria Co, PA | ||
| Ashley | PO | Pike Co, MO | ||
| Ashley | PO | Delaware Co, OH | ||
| Ashley | PO | Carroll Co, AR | ||
| Ashleyville | PO | Hampton Co, MA | ||
| Ashley Falls | PO | Berkshire, MA | ||
| Ashport | V | Landerdale Co, TN | water by Mississippi river | |
| Ash Ridge | PO | Brown Co, OH | ||
| Ash Ridge | PO | Pulaski Co, IL | ||
| Ash Run | PO | Pendleton Co, KY | ||
| Ash Spring | PO | Harrison Co, TX | ||
| Ashtabula | PT | Ashtabula Co, OH | 1,356 | |
| Ashton | PO | Carlisle Parish, LA | ||
| Ashton | PO | Clarke Co, MO | ||
| Ashton | PO | Dane Co, WI | ||
| Ashton | PO | Carroll Parish, LA | ||
| Ashton's | (not listed) | Shelby Co, TX | ||
| Ashton's Mills | PO | Frederick Co, VA | ||
| Ashville | PO | Pickaway Co, OH | ||
| Ashville | PV, CH | St Clair Co, AL | seat of justice, water by Canoe creek | |
| Ashville | PV, CH | Buncombe Co, NC | 420 | seat of justice, water by French Broad river |
| Ashwood | PO | Maury Co, TN | ||
| Askleyville | PO | Macomb Co, MI | ||
| Aspalaga | V | Gadsden Co, FL | ||
| Aspen Grove | PO | Pittsylvania Co, VA | ||
| Aspen Grove | PO | Calhoun Co, FL | ||
| Aspen Wall | PO | Charlotte Co, VA | ||
| Assabet | PO | Middlesex Co, MA | ||
| Assumption | PV, CH | Assumption Parish, LA | ||
| Assyria | PO | Barry Co, MI | ||
| Aston | T | Delaware Co, PA | ||
| Astoria | PV | Newtown Twp, Queens Co, NY | 6 miles NE of New York City | |
| Astoria | PO | Butler Co, OH | ||
| Astoria | PO | Fulton Co, IL | ||
| Astoria | PO | Wright Co, MO | ||
| Assylum | PT | Bradford Co, PA | 820 | water by Susquehanna river |
| Atchafalava | PO | Point Coupee Parish, LA | ||
| Athens | PB | Bradford Co, PA | 2,127 | water by Susquehanna & Chemung rivers |
| Athens | PO | Henderson Co, TX | ||
| Athens | T | Crawford Co, PA | 928 | |
| Athens | PV, CH | Athens Co, OH | 1,462 | seat of justice |
| Athens | PT | Greene Co, NY | 2,986 | water by Hudson river |
| Athens | PT | Somerset Co, ME | 1,460 | |
| Athens | PT | Windham Co, VT | 359 | |
| Athens | PT | Calhoun Co, MI | 533 | |
| Athens | T | Harrison Co, OH | 1,085 | |
| Athens | PO | Caroline Co, VA | ||
| Athens | PV, CH | Clarke Co, GA | 3,795 | seat of justice, water by Oconee river |
| Athens | PV, CH | Limestone Co, AL | seat of justice | |
| Athens | PV | Monroe Co, MS | water by Tombigbee river | |
| Athens | PV, CH | McMinn Co, TN | water by Eastanalla creek | |
| Athens | PO | Claiborne Parish, LA | ||
| Athens | PO | Henderson Co, TX | ||
| Athens | PO | Layette Co, KY | water by Kentucky river | |
| Athens | PC | Menard Co, IL | water by Sangamon river | |
| Athens | PO | Clarke Co, MO | ||
| Athens | PV | Izard Co, AR | seat of justice, water by White river | |
| Athens | PO | Dodge Co, WI | ||
| Athensville | PO | Greene Co, IL | ||
| Athol | PT | Worcester Co, MA | 2,034 | water by Miller's river |
| Athol | PT | Warren Co, NY | 1,599 | water by Hudson river |
| Athol Depot | PO | Worcester Co, MA | ||
| Atkinson | PT | Rockingham Co, NH | 600 | |
| Atkinson | PT | Piscataquis Co, ME | 895 | |
| Atkinson's Mills | PO | Mifflin Co, PA | ||
| Atlanta City | PO | De Kalb Co, GA | 2,572 | |
| Atlas | PV | Pike Co, IL | water by Mississippi river | |
| Atlas | T | Lapeer Co, MI | 1,207 | |
| Atsion | PV | Galloway Twp, Burlington Co, NJ | water by Atsion river | |
| Attalaville | PO | Attala Co, MS | ||
| Attapulgus | PO | Decatur Co, GA | ||
| Attica | PT | Wyoming Co, NY | 2,363 | water by Tonawanda creek |
| Attica | PV | Venice Twp, Seneca Co, OH | ||
| Attica | PO | Greene Co, WI | ||
| Attica | PO | Fountain Co, IN | water by Wabash river | |
| Attica | PO | Lenawee Co, MI | ||
| Attica Centre | PC | Attica Twp, Wyoming Co, NY | ||
| Attleborough | PT | Bristol Co, MA | 4,200 | water by Pantucket river |
| Attleborough | PV | Bucks Co, PA | ||
| Attlebury | PO | Sandford Twp, Dutchess Co, NY | ||
| Atwater | PT | Portage Co, OH | 1,119 | |
| Atwood | PO | De Kalb Co, AL | ||
| Aubbeenaubee | PO | Fulton Co, IN | ||
| Auburn | PT | Worcester Co, MA | water by French river | |
| Auburn | PV, CH | Cayuga Co, NY | 9,548 | seat of justice, water by Owasco outlet |
| Auburn | PV, CH | Placer Co, CA | seat of justice | |
| Auburn | PO | Fauquier Co, VA | ||
| Auburn | PT | Geauga Co, OH | ||
| Auburn | PT | Richland Co, OH | ||
| Auburn | PV | Pontiac Twp, Oakland Co, MI | water by Clinton river | |
| Auburn | PT | De Kalb Co, IN | 260 | |
| Auburn | PV | Sangamon Co, IL | water by Sugar Creek | |
| Auburn | PV | Lincoln Co, MO | ||
| Auburn | PO | Hinds Co, MS | ||
| Auburn | PO | Chester Co, PA | ||
| Auburn | PO | Gwinnett Co, GA | ||
| Auburn | PV | Macon Co, AL | ||
| Auburn | PO | Mahaska Co, IA | ||
| Auburn | PO | Wake Co, NC | ||
| Auburn | PO | Fond du Lac Co, WI | ||
| Auburn | PO, T | Cumberland Co, ME | 2,840 | |
| Auburn | PT | Rockingham Co, NH | 810 | |
| Auburn | PO | Schuylkill Co, PA | ||
| Auburn (Four-Corners) | PV | Susquehanna Co, PA | ||
| Auburn | PO | Cannon Co, TN | ||
| Aucilla | PO | Jefferson Co, FL | ||
| Audubon | PO | Hardiman Co, TN | water by Cat creek | |
| Audubon | PO | Montgomery Co, IL | ||
| Augerona | PO | Jackson Co, VA | ||
| Auglaize | T | Allen Co, OH | 1,344 | |
| Auglaize | T | Paulding Co, OH | ||
| Auglaize | PO | Van Wert Co, OH | ||
| Augusta | City | Kennebec Co, ME | State Capital | |
| Augusta | PO | Benton Co, FL | ||
| Augusta | PT | Oneida Co, NY | 2,271 | water by Skanandoah creek |
| Augusta | PV | Frankford Twp, Sussex Co, NJ | ||
| Augusta | PT | Northumberland Co, PA | water by Shamokia creek | |
| Augusta | PT | Carroll Co, OH | 1,297 | water by Sandy creek |
| Augusta | PV | Des Moines Co, IA | 496 | |
| Augusta | PV, CH | Bracken Co, KY | seat of justice | |
| Augusta | City, CH | Richmond Co, GA | seat of justice, on west side of Savannah river | |
| Augusta | PV, CH | Perry Co, MS | seat of justice, water by Leaf river | |
| Augusta | PV | Marion Co, IN | water by White river | |
| Augusta | PV | Hancock Co, IL | ||
| Augusta | T | Kalamazoo Co, MI | water by Kalamazoo river | |
| Augusta | PO | St Charles Co, MO | ||
| Augusta | T | Washtenaw Co, MI | ||
| Augusta | PO | Jackson Co, AR | ||
| Auman's Hill | PO | Montgomery Co, NC | ||
| Auraria | PV | Lumpkin Co, GA | water by Chestatee & Etowah rivers | |
| Aurelia | PO | Washington Co, OH | ||
| Aurelius | PT | Cayuga Co, NY | 2,831 | water by Owasco outlet |
| Aurelius | T | Washington Co, OH | 1,251 | water by Duck creek |
| Aurelius | T | Ingham Co, MI | 501 | |
| Auriesville | PO | Gleff Twp, Montgomery Co, NY | ||
| Aurora | T | Erie Co, NY | 3,435 | water by Seneea & Cazenovia creeks |
| Aurora | PV | Ledyard Twp, Cayuga Co, NY | on Cayuga Lake | |
| Aurora | (not listed) | Hancock Co, ME | 217 | |
| Aurora | PT | Portage Co, OH | 828 | |
| Aurora | V | Racine Co, WI | ||
| Aurora | PT | Dearborn Co, IN | 2,616 | |
| Aurora | PV | Kane Co, IL | 1,895 | water by Fox river |
| Aurora | PV | Marshall Co, KY | ||
| Aurora | PO | Marshall Co, AL | ||
| Aurora | PO | Clarke Co, AR | ||
| Au Sable | T | Clinton Co, NY | 4,492 | water by Great & Little Au Sable rivers |
| Au Sable | PO | Jay Twp, Essex Co, NY | ||
| Au Sable | PO | Kendall Co, IL | ||
| Au Sable Forks | PV | Jay Twp, Essex Co, NY | ||
| Austerlitz | PT | Columbia Co, NY | water by Green river | |
| Austerlitz | PV | Kent Co, MI | 1,873 | |
| Austin | City | Travis Co, TX | State Capital | |
| Austin | PO | Ross Co, OH | ||
| Austin | PV, CH | Tunica Co, MS | seat of justice | |
| Austinburgh | PT | Ashtabula Co, OH | 1,285 | |
| Austintown | T | Trumbull Co, OH | ||
| Austinville | PO | Wythe Co, VA | ||
| Austinville | PO | Livingston Co, MO | ||
| Autaugaville | PO | Autauga Co, AL | ||
| Auvase | PT | Callaway Co, MO | ||
| Ava | PO | Boonville Twp, Oneida Co, NY | ||
| Ava | PV | Winnebago Co, IL | ||
| Averhill | T | Essex Co, VT | water by Nulhegan river | |
| Avent's Cross Roads | PO | Greenville Co, VA | ||
| Avery | PO | Monroe Co, IA | ||
| Avery | PO | Jo-Daviess Co, IL | ||
| Averyborough | PV | Cumberland Co, NC | water by Cape Fear river | |
| Avery's Creek | PO | Buncombe Co, NC | ||
| Avery's Gore | T | Addison Co, VT | ||
| Avery's Gore | T | Franklin Co, VA | 48 | |
| Avilla | PO | Noble Co, IN | ||
| Aviston | PT | Clinton Co, IL | ||
| Avo | PO | Patrick Co, VA | ||
| Avoca | PV | Bath Twp, Steuben Co, NY | 1,574 | |
| Avoca | (not listed) | Livingston Co, IL | ||
| Avoca | PO | Fond du Lac Co, WI | ||
| Avoca | PO | Jefferson Co, MO | ||
| Avoca | PO | Lawrence Co, AL | ||
| Avon | PT | Franklin Co, ME | 778 | |
| Avon | PT | Hartford Co, CT | 995 | |
| Avon | PV | Livingston Co, NY | 2,809 | water by Genesee river |
| Avon | PT | Lorain Co, OH | 1,782 | |
| Avon | V | Kane Co, IL | ||
| Avon | P | St Genevieve Co, MO | ||
| Avon | T | Oakland Co, MI | 1,456 | |
| Avon | P | Rock Co, WI | ||
| Avon | PO | Ionia Co, MI | ||
| Avondale | PO | Chester Co, PA | ||
| Avon Lake | PO | Lorain Co, OH | ||
| Axeville | PO | Connewang Twp, Cattaraugus Co, NY | ||
| Ayersville | PO | Stokes Co, NC | ||
| Ayersville | PO | Defiance Co, OH | ||
| Aylett's | PO | King William Co, VA | ||
| Azalia | PV | Bartholomew Co, IN | ||
| Aztalan | PT | Jefferson Co, WI |