1850 Atlas
| Name | What | Place | Pop | Other |
| Jefferson | PT | Lincoln Co, ME | 2,225 | water by Damariscotta pond & river |
| Jefferson | PT | Coos Co, NH | 629 | water by Israel's river |
| Jefferson | PT | Schoharie Co, NY | 1,748 | water by tributaries of Delaware river & Schoharie creek |
| Jefferson | V | Dix twp, Chemung Co, NY | water by Seneca lake & Chemung canal | |
| Jefferson | T | Morris Co, NJ | 1,358 | water by Rockaway river, Hurd's pond & Hopatcong lake |
| Jefferson | PT | Greene Co, PA | 1,435 | water by Monongahela river & Ten Mile creek |
| Jefferson | T | Alleghany Co, PA | 1,138 | |
| Jefferson | T | Cambria Co, PA | ||
| Jefferson | T | Fayette Co, PA | 1.435 | |
| Jefferson | T | Luzerne Co, PA | 414 | |
| Jefferson | PT, CH | Ashtabula Co, OH | 1,064 | seat of justice, water by Mills creek |
| Jefferson | T | Adams Co, OH | ||
| Jefferson | T | Clinton Co, OH | 810 | |
| Jefferson | T | Coshocton Co, OH | 929 | |
| Jefferson | T | Franklin Co, OH | 1,236 | water by Black Lick creek & Rocky fork of Big Walnut creek |
| Jefferson | T | Guernsey Co, OH | 857 | |
| Jefferson | T | Jackson Co, OH | 1,036 | |
| Jefferson | T | Fayette Co, OH | ||
| Jefferson | T | Logan Co, OH | 2,042 | |
| Jefferson | T | Knox Co, OH | 1,484 | |
| Jefferson | T | Montgomery Co, OH | 1,808 | |
| Jefferson | T | Madison Co, OH | 634 | water by Little Darby creek |
| Jefferson | T | Mercer Co, OH | 271 | |
| Jefferson | T | Muskingum Co, OH | 2,822 | |
| Jefferson | T | Preble Co, OH | 2,258 | |
| Jefferson | T | Ross Co, OH | water by Scioto river, Walnut & Salt creeks | |
| Jefferson | T | Richland Co, OH | 2,564 | |
| Jefferson | T | Scioto Co, OH | 840 | water by Scioto river |
| Jefferson | T | Tuscarawas Co, OH | 1,063 | |
| Jefferson | T | Williams Co, OH | 1,015 | |
| Jefferson | T | Allen Co, IN | 563 | |
| Jefferson | PV | Clinton Co, IN | 254 | |
| Jefferson | T | Grant Co, IN | 1,029 | |
| Jefferson | T | Miami Co, IN | 1,138 | |
| Jefferson | T | Hamilton Co, IN | ||
| Jefferson | T | Noble Co, IN | 722 | |
| Jefferson | T | Putnam Co, IN | 1,046 | |
| Jefferson | T | Switzerland Co, IN | 3,082 | |
| Jefferson | T | Wayne Co, IN | 1,117 | |
| Jefferson | T | Adair Co, MO | 1,502 | |
| Jefferson | T | Johnson Co, MO | 1,003 | |
| Jefferson | T | Scotland Co, MO | 1,024 | |
| Jefferson | T | Jefferson Co, WI | ||
| Jefferson | T | Sevier Co, AR | 489 | |
| Jefferson | PV | Frederick Co, MD | ||
| Jefferson | PO | Powhatan Co, VA | ||
| Jefferson | PV, CH | Ashe Co, NC | seat of justice, water by New river | |
| Jefferson | PV, CH | Jackson Co, GA | seat of justice, water by Oconee river | |
| Jefferson | PV | Rutherford Co, TN | water by Stone's river & west fork of Cumberland river | |
| Jefferson | T | Cass Co, MI | 887 | |
| Jefferson | PT, CH | Jefferson Co, WI | ||
| Jefferson | PO | Cass Co, TX | ||
| Jefferson | PO | Marengo Co, AL | ||
| Jefferson | T | Cole Co, MO | ||
| Jefferson | T | Osage Co, MO | 492 | |
| Jefferson | T | Johnson Co, MO | ||
| Jefferson | T | Livingston Co, MO | ||
| Jefferson | T | Monroe Co, MO | ||
| Jefferson | T | Sevier Co, AR | 489 | |
| Jefferson Barracks | PV | St Louis Co, MO | military station of the US | |
| Jefferson City | City | Cole Co, MO | 3,721 | seat of justice, Capital of Missouri |
| Jefferson Furnace | PO | Clarion Co, PA | ||
| Jefferson Mills | PO | Coos Co, NH | ||
| Jefferson Mills | PO | Jefferson Co, MO | ||
| Jefferson Valley | PO | Westchester Co, NY | ||
| Jeffersonton | PV | Culpepper Co, VA | water by Rappahannock river | |
| Jeffersonton | PV, CH | Camden Co, GA | water by St Illa river | |
| Jeffersontown | PV | Jefferson Co, KY | ||
| Jeffersonville | PV | Lamoille Co, VT | ||
| Jeffersonville | PO | Sullivan Co, NY | ||
| Jeffersonville | PV | Clark Co, IN | 1,725 | water by Ohio river |
| Jeffersonville | PV | Morristown twp, Montgomery Co, PA | ||
| Jeffersonville | PO | Fayette Co, OH | 1,872 | |
| Jeffersonville | PO | Twiggs Co, GA | ||
| Jeffrey's Creek | PO | Marion dist, SC | ||
| Jeffrey's Store | PO | Nottoway Co, VA | ||
| Jeffries | PO | Clearfield Co, PA | ||
| Jelloway | PO | Knox Co, OH | ||
| Jena | T | Livingston Co, MI | ||
| Jena | PO | Tuscaloosa Co, AL | ||
| Jenks | T | Jefferson Co, PA | 88 | |
| Jenkins' Bridge | PO | St Clair Co, MO | ||
| Jenkins' Creek | PO | Jasper Co, MO | ||
| Jenkins' Store | PO | Union Co, NC | ||
| Jenkintown | PV | Montgomery Co, PA | ||
| Jenner | PT | Somerset Co, PA | water by Beaver Dam run | |
| Jenner's Cross Roads | PO | Jenner twp, Somerset Co, PA | ||
| Jennersville | PV | Chester Co, PA | ||
| Jennings | T | Van Wert Co, OH | 201 | |
| Jennings | T | Putnam Co, OH | 336 | |
| Jennings | T | Fayette Co, IN | 803 | |
| Jennings | PO | Franklin Co, IN | ||
| Jennings | PO | Hamilton Co, FL | ||
| Jennings Gap | PO | Augusta Co, VA | ||
| Jennings Ordinary | PO | Nottoway Co, VA | ||
| Jenny Lind | PO | Sebastian Co, AR | ||
| Jenny Lind | PO | Chatham Co, NC |