United States

The listings represent recent historical, geographical information, being that of around 1957, unless otherwise noted.

United States of America (1800)
States:
Connecticut, Delaware, Georgia, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Virginia

United States of America (1821)
Free States:
California, Connecticut, Illinois, Indiana, Iowa, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Wisconsin
Free Territories:
Minnesota, Oregon, Unorganized
Slave States:
Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, Missouri, North Carolina, South Carolina, Tennessee, Texas, Virginia
Slave Districts:
District of Columbia
Slave Territories:
New Mexico, Indian, Utah

United States of America (1861)
Seceding States:
Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas, Virginia

United States of America (Dates)
Dates of Entering the Union:
Delaware (1787), Pennsylvania (1787), New Jersey (1787), Georgia (1788), Connecticut (1788), Massachusetts (1788), Maryland (1788), South Carolina (1788), New Hampshire (1788), Virginia (1788), New York (1788), North Carolina (1789), Rhode Island (1790), Vermont (1791), Kentucky (1792), Tennessee (1796), Ohio (1803), Louisiana (1812), Indiana (1816), Mississippi (1817), Illinois (1818), Alabama (1819), Maine (1820), Missouri (1821), Arkansas (1836), Michigan (1837), Florida (1845), Texas (1845), Iowa (1846), Wisconsin (1848), California (1850), Minnesota (1858), Oregon (1859), Kansas (1861), West Virginia (1863), Nevada (1864), Nebraska (1867), Colorado (1876), North Dakota (1889), South Dakota (1889), Montana (1889), Washington (1889), Idaho (1890), Wyoming (1890), Utah (1896), Oklahoma (1907), New Mexico (1912), Arizona (1912), Alaska (1959), Hawaii (1959)

United States of America (Counties)
Counties, Largest (1992):
San Bernardino, CA (20,064 sq. mi.); Coconino, AZ (18,608); Nye, NV (18,155); Elko, NV (17,135); Mohave, AZ (13,285); Apache, AZ (11,211); Lincoln, NV (10,635); Sweetwater, WY (10,352); Inyo, CA (10,233); Harney, OR (10,174); Navajo, AZ (9,955); Malheur, OR (9,861); Humboldt, NV (9,698); Pima, AZ (9,187); Fremont, WY (9,181); Maricopa, AZ (9,127); White Pine, NV (8,902); Idaho, ID (8,497); Lake, OR (8,251); Yavapai, AZ (8,122)
Counties, Smallest (1992):
Kalawao, HI (14 sq. mi.); New York, NY (22); Arlington, VA (26); Bristol, RI (26); Bronx, NY (42); Hudson, NJ (46); San Francisco, CA (46); Nantucket, MA (47); Suffolk, MA (57); Richmond, NY (59); Kings, NY (70); Hancock, WV (85); Mathews, VA (87); Ohio, IN (87); Grand Isle, VT (89); Brooke, WV (90); Gallatin, KY (99); Robertson, KY (100); Dukes, MA (102); Union, NJ (103)

United States of America (Names)
Counties, Popular Names for:
Washington (31 states), Jefferson (26), Franklin (25), Jackson (24), Lincoln (24), Madison (20), Clay (18), Montgomery (18), Union (18), Marion (17), Monroe (17), Wayne (16), Grant (15), Greene (14), Warren (14), Carroll (13), Adams (12), Clark (12), Douglas (12), Johnson (12), Lake (12), Lee (12), Marshall (12), Polk (12), Calhoun (11), Crawford (11), Fayette (11), Lawrence (11), Morgan (11), Scott (11), Hamilton (10), Hancock (10), Henry (10), Logan (10), Perry (10), Pike (10), Benton (9), Brown (9), Cass (9), Clinton (9), Knox (9), Putnam (9), Shelby (9), Boone (8), Butler (8), Cherokee (8), Columbia (8), Cumberland (8), Fulton (8), Harrison (8), Jasper (8), Mercer (8), Orange (8), Randolph (8), Webster (8)
Cities, Popular Names for:
Franklin (29 states), Clinton (25), Madison (25), Marion (25), Salem (25), Chester (24), Greenville (24), Hamilton (24), Kingston (24), Lincoln (24), Springfield (24), Washington (24), Arlington (23), Centerville (22), Oxford (22), Lexington (22), Monroe (22), Newport (22), Troy (22), Georgetown (21), Milton (21), Princeton (21), Auburn (20), Cleveland (20), Dayton (20), Fairview (20), Hillsboro (20), Jefferson (20), Mount Vernon (20), Oakland (20), Richmond (20), Ashland (19), Canton (19), Clayton (19), Danville (19), Florence (19), Union (19)

United States of America (Parks)
National Parks (1957):
Acadia, ME; Big Bend, TX; Bryce Canyon, UT; Carlsbad Caverns, NM; Crater Lake, OR; Everglades, FL; Glacier, MT; Grand Canyon, AZ; Grand Teton, WY; Great Smoky Mountains, NC-TN; Hawaii, HI; Isle Royale, MI; Katmai, AK; Kings Canyon, CA; Lassen Volcanic, CA; Mammoth Cave, KY; Mount McKinley, AK; Mount Rainier, WA; Mesa Verde, CO; Olympic, WA; Rocky Mountain, CO; Sequoia, CA; Theodore Roosevelt, ND; Wind Cave, SD; Yellowstone, ID-MT-WY; Yosemite, CA; Zion, UT
National Parks (1995):
Acadia, ME; Aniakchak, AK; Arches, UT; Badlands, SD; Big Bend, TX; Bryce Canyon, UT; Canyonlands, UT; Capitol Reef, UT; Carlsbad Caverns, NM; Crater Lake, OR; Denali, AK; Everglades, FL; Gates of the Arctic, AK; Glacier, MT; Glacier Bay, AK; Grand Canyon, AZ; Grand Teton, WY; Great Basin, NV; Great Smoky Mountains, NC-TN; Guadelupe Mountains, TX; Haleakala, HI; Hawaii Volcanoes, HI; Isle Royale, MI; Katmai, AK; Kenai Fjords, AK; Kings Canyon, CA; Kobuk Valley, AK; Lake Clark, AK; Lassen Volcanic, CA; Mammoth Cave, KY; Mount McKinley, AK; Mount Rainier, WA; Mesa Verde, CO; North Cascades, WA; Olympic, WA; Petrified Forest, AZ; Redwood, CA; Rocky Mountain, CO; Sequoia, CA; Theodore Roosevelt, ND; Voyageurs, MN; Wind Cave, SD; Wrangell-St. Elias, AK; Yellowstone, ID-MT-WY; Yosemite, CA; Zion, UT
National Monuments (1957):
Arches, UT; Badlands, SD; Bandelier, NM; Black Canyon of the Gunnison, CO; Canyon De Chelly, AZ; Capitol Reef, UT; Casa Grande, AZ; Cedar Breaks, UT; Chaco Canyon, NM; Chiricahua, AZ; Colorado, CO; Craters of the Moon, ID; Death Valley, CA; Devil Postpile, CA; Devils Tower, WY; Dinosaur, CO-UT; Gila Cliff Dwellings, NM; Glacier Bay, AK; Gran Quivira, NM; Grand Canyon, AZ; Great Sand Dunes, CO; Jewel Cave, SD; Joshua Tree, CA; Katmai, AK; Lava Beds, CA; Lehman Caves, NV; Montezuma Castle, AZ; Natural Bridges, UT; Organ Pipe Cactus, AZ; Petrified Forest, AZ; Saguaro, AZ; Scotts Bluff, NE; Shoshone Caverns, WY; Sunset Crater, AZ; Timpanagos, UT; Tonto, AZ; Tumacacori, AZ; Tuzigoot, AZ; Verendrye, ND; Walnut Canyon, AZ; White Sands, NM
National Seashores (1995):
Assateague, MD; Canaveral, FL; Cape Cod, MA; Cape Lookout, NC; Fire Island, NY; Gulf Islands, FL; Padre Island, TX
National Lakeshores (1995):
Apostle Islands, WI; Indiana Dunes, IN; Pictured Rocks, MI