J
- Jackson, California – Colonel Alden Jackson
- Jackson, Maine – General Henry Jackson
- Jackson, Burnett County, Wisconsin – Stonewall Jackson
- Jackson, Wyoming – Davey Jackson
- Jackson – Andrew Jackson, 14 places in
- Alabama – Georgia – Kentucky – Louisiana – Michigan – Minnesota – Mississippi – Missouri – New Hampshire – New Jersey – New York – Ohio – Tennessee – Washington County, Wisconsin
- Jacksonville, Arkansas – Nicholas and Elizabeth Jackson (landowners)
- Jacksonville, Texas – Jackson Smith (soldier)
- Jacksonville – Andrew Jackson, 5 places in
- Alabama – Florida – Illinois – North Carolina – Oregon
- Jacobs Corner, California – Mattie Jacobs (first postmaster)
- Jaffrey, New Hampshire – George Jaffrey (member of a wealthy Portsmouth family)
- Jamesan, California – J.G. James (first postmaster)
- Jamesburg, California – John James (founder)
- Jamestown, New York – James Prendergast (settler)
- Jamestown, Rhode Island – James II of England
- Jamestown, Virginia – James I of England
- Janesville, California – Jane Bankhead (early settler)
- Janesville, Wisconsin – Henry Janes (early settler and first postmaster)
- Jasper, Texas – William Jasper (American Revolution hero)
- Jay, Maine and Jay, Vermont – John Jay (the first chief justice of the Supreme Court)
- Jean, Nevada – Jean Fayle (wife of postmaster George Fayle)
- Jefferson, Maine and Jefferson, New Hampshire – Thomas Jefferson
- Jefferson City, Missouri – Thomas Jefferson
- Jefferson County, Florida – Thomas Jefferson
- Jeffersonville, Georgia – Thomas Jefferson
- Jenny Lind, California – Jenny Lind
- Jesus Maria, California – Jesus Maria (local farmer)
- Jewell, California – Omar Jewell (local rancher)
- Jim Thorpe, Pennsylvania – Jim Thorpe
- Joaquin, Texas – Joaquin Morris (grandson of Benjamin Franklin Morris, who donated the land for the site)
- Joe, Montana – Joe Montana
- Joe Walker Town, California – Joe Walker
- Johnson, Vermont – William Samuel Johnson
- Johnston, Rhode Island – August Johnston (colonial attorney general)
- Johnstonville, California – Robert Johnston (town developer)
- Johnstown, Colorado – John Parish (father of Harvey J. Parish, who platted the town)
- Jonesboro, Maine – John Coffin Jones (landholder)
- Jonesport, Maine – John Coffin Jones (landholder)
- Jonesville, Virginia – Frederick Jones (landowner)
- Joplin, Missouri – a Methodist minister in the new city
- Jordan, Montana – Arthur Jordan (founder)
- Judsonville, California – Egbert Judson (part owner of local mine)
- Julesburg, Colorado – Jules Beni (established a trading post here)
- Juneau, Alaska – Joe Juneau (prospector)
Read more about this topic: List Of American Places Named After People
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