1850 Atlas
| Name | What | Place | Pop | Other |
| Labanus | PO | Robertson Co, TN | ||
| Lacey | PO | De Kalb Co, IL | ||
| Lacey Spring | PO | Rockingham Co, VA | ||
| Lacey's Spring | PO | Morgan Co, AL | ||
| Laceyville | PO | Wyoming Co, PA | ||
| Laceyville | PO | Harrison Co, OH | ||
| Lackawack | PO | Wawarsing twp, Ulster Co, NY | ||
| Lackawanna | PT | Luzerne Co, PA | 389 | |
| Lackawannock | T | Mercer Co, PA | water by Little Neseannock creek | |
| Lackawaxen | PT | Pike Co, PA | 1,419 | water by Delaware river & Lackawaxen creek |
| La Clair | PO | De Kalb Co, IL | ||
| La Cross | PO | Crawford Co, WI | ||
| La Fargeville | PO | Orleans twp, Jefferson Co, NY | ||
| La Fontaine | PO | Harlan Co, KY | ||
| La Fontaine | PO | Wabash Co, IN | ||
| La Grange | PT | Penobscot Co, ME | 482 | water by tributaries of Penobscot river |
| La Grange | T | Dutchess Co, NY | 1,941 | water by Sprout & Wappinger's creeks |
| La Grange | PO | Covington twp, Wyoming Co, NY | ||
| La Grange | PO | Wyoming Co, PA | ||
| La Grange | PT | Lorain Co, OH | 1,402 | water by tributaries of Black river |
| La Grange | PV, CH | Oldham Co, KY | seat of justice, water by Ohio river | |
| La Grange | PV | Randolph Co, NC | ||
| La Grange | PV, CH | Troup Co, GA | 1,614 | seat of justice |
| La Grange | PV | Franklin Co, AL | seat of La Grange college | |
| La Grange | PV | Fayette Co, TN | ||
| La Grange | PT | Cass Co, MI | 1,327 | water by tributary of Dowagiake river & Putnum's creek |
| La Grange | T | Fayette Co, AR | ||
| La Grange | PV | Lewis Co, MO | water by Mississippi river | |
| La Grange | PV, CH | La Grange Co, IN | ||
| La Grange | PO | Fayette Co, TX | ||
| La Grange | PO | Walworth Co, WI | ||
| La Grange | PO | Monroe Co, IA | ||
| La Grange Bluff | PO | Brown Co, IL | ||
| La Grew Springs | PO | Arkansas Co, AR | ||
| La Harpe | PO | Hancock Co, IL | ||
| La Mine | PO | Cooper Co, MO | ||
| La Mira | PO | Belmont Co, OH | ||
| La Mott | PO | Jackson Co, IA | ||
| Lacon | PV, CH | Marshall Co, IL | seat of justice, water by Illinois river | |
| Lacona | PO | Jefferson Co, KY | ||
| Laconia | PO | Desha Co, AR | ||
| Laconia | PV | Harrison Co, IN | ||
| Lacy | PO | Drew Co, AR | ||
| Lacy's Hill | PO | Pickens Co, AL | ||
| Laddsburgh | PO | Bradford Co, PA | ||
| Ladiesburgh | PV | Frederick Co, MD | ||
| Ladiga | PO | Benton Co, AL | ||
| Ladoga | PO | Montgomery Co, IN | ||
| Ladoga | PO | Fond du Lac Co, WI | ||
| Lafayette | PT | Onondaga Co, NY | 2,533 | water by Onondaga creek |
| Lafayette | PO | Stark Co, IL | ||
| Lafayette | PV, CH | Newton twp, Sussex Co, NJ | 928 | water by Paulinskill river |
| Lafayette | PV | Deer creek twp, Madison Co, OH | 147 | |
| Lafayette | T | Coshocton Co, OH | 1,040 | |
| Lafayette | T | Medina Co, OH | 1,532 | |
| Lafayette | PV | Christian Co, KY | ||
| Lafayette | PV | Montgomery Co, VA | ||
| Lafayette | PV | Walker Co, GA | 588 | seat of justice |
| Lafayette | T | Floyd Co, IN | 1,215 | |
| Lafayette | PV, CH | Tippecanoe Co, IN | 6,129 | seat of justice, on Wabash river, at head of steamboat navigation |
| Lafayette | T | Owen Co, IN | 754 | |
| Lafayette | City, CH | Jefferson parish, LA | 14,190 | seat of justice, water by Mississippi river |
| Lafayette | T | Van Buren Co, MI | 1,143 | |
| Lafayette | T | Wachita Co, AR | 1,181 | |
| Lafayette | T | Livingston Co, MO | ||
| Lafayette | PO | Kinn Co, IA | ||
| Lafayette | PO | Grafton Co, NH | ||
| Lafayette | PO | Macon Co, TN | ||
| Lafayette | PO | Walworth Co, WI | ||
| Lafayette Hill | PO | Fluvanna Co, VA | ||
| Lafayette Spring | PO | Lafayette Co, MS | ||
| Lafayetteville | PO | Dutchess Co, NY | ||
| Laffing Gall | PO | Cherokee Co, GA | ||
| Lagado | PO | Wilson Co, TN | ||
| Largo | PT | Wabash Co, IN | 2,515 | |
| Lahaska | PO | Bucks Co, PA | ||
| Laing's | PO | Greene twp, Monroe Co, OH | ||
| Lainhsburgh | PV | Shiawassee Co, MI | ||
| Lairdsville | PO | Westmoreland twp, Oneida Co, NY | ||
| Lairdsville | PO | Lycoming Co, PA | ||
| Lake | PO | Greenwich twp, Washington Co, NY | ||
| Lake | PT | Wood Co, OH | 152 | |
| Lake | PO | Luzerne Co, PA | ||
| Lake | T | Logan Co, OH | 1,767 | |
| Lake | T | Wayne Co, OH | water by east fork of Mohican river | |
| Lake | T | Allen Co, IN | 578 | |
| Lake | CH | Crown Point twp, Lake Co, IN | seat of justice | |
| Lake | T | Milwaukee Co, WI | ||
| Lake Carraway | PO | Carroll parish, LA | ||
| Lake Charles | PO | Calcasicu parish, LA | ||
| Lake Comfort | PO | Hyde Co, NC | ||
| Lake Creek | PO | Lamar Co, TX | ||
| Lake Drummond | PO | Norfolk Co, VA | ||
| Lake Griffin | PO | Marion Co, FL | ||
| Lake Landing | PV, CH | Hyde Co, NC | seat of justice, water by Mattimuskett lake | |
| Lake Maria | PO | Marquette Co, WI | ||
| Lake Mills | PO | Jefferson Co, WI | ||
| Lake Pleasant | PT | Hamilton Co, NY | 505 | water by Sacandaga & Indian rivers, Lake Pleasant |
| Lake Providence | PV, CH | Carroll parish, LA | seat of justice, water by Lake providence & Tensas river | |
| Lake Ridge | PO | Tompkins Co, NY | ||
| Lake Swamp | PO | Horry dist, SC | ||
| Lake View | PO | Dane Co, WI | ||
| Lake Village | PV | Gilford twp, Belknap Co, NH | water by Lake Winnipiseogee | |
| Lake Zurich | PO | Lake Co, IL | ||
| Lakeland | PO | Brookhaven twp, Suffolk Co, Long Island, NY | near Ronkonkoma lake | |
| Lakeport | PO | Madison Co, NY | ||
| Lakesville | PO | Dorchester Co, MD | ||
| Laketon | PV | Wabash Co, IN | water by Eel river | |
| Lakeville | PO | Livonia twp, Livingston Co, NY | ||
| Lakeville | V | North Hempstead twp, Queen's Co, Long Island, NY | water by Success pond | |
| Lakeville | PV | Oakland Co, MI | ||
| Lakeville | PO | Litchfield Co, CT | ||
| Lakeville | PO | St Joseph Co, IN |