This is a list of the most common U.S. county names, specifically the names with five or more counties sharing the name. Washington County (31 counties) All of the Washington Counties in the United States are named for George Washington, first President of the United States. Washington County, Alabama Washington County, Arkansas Washington County, Colorado Washington County, Florida Washington County, Georgia Washington County, Idaho Washington County, Illinois Washington County, Indiana Washington County, Iowa Washington County, Kansas Washington County, Kentucky Washington County, Maine Washington County, Maryland Washington County, Minnesota Washington County, Mississippi Washington County, Missouri Washington County, Nebraska Washington County, New York Washington County, North Carolina Washington County, Ohio Washington County, Oklahoma Washington County, Oregon Washington County, Pennsylvania Washington County, Rhode Island Washington County, Tennessee Washington County, Texas Washington County, Utah Washington County, Vermont Washington County, Virginia Washington County, Wisconsin Washington Parish, Louisiana Jefferson County (26 counties) Twenty three of the twenty six Jefferson Counties in the United States are directly named for Thomas Jefferson, the third President, and the remaining three are indirectly named for him. Jefferson County, Alabama Jefferson County, Arkansas Jefferson County, Colorado: named for the Territory of Jefferson, which extralegally governed the area before the United States Congress established the Colorado Territory, the territory in turn was named for Thomas Jefferson Jefferson County, Florida Jefferson County, Georgia Jefferson County, Idaho Jefferson County, Illinois Jefferson County, Indiana Jefferson County, Iowa Jefferson County, Kansas Jefferson County, Kentucky Jefferson County, Mississippi Jefferson County, Missouri Jefferson County, Montana: named for the Jefferson River, in turn named for Thomas Jefferson Jefferson County, Nebraska Jefferson County, New York Jefferson County, Ohio Jefferson County, Oklahoma Jefferson County, Oregon: named for Mount Jefferson on the county's western boundary, in turn named for Thomas Jefferson Jefferson County, Pennsylvania Jefferson County, Tennessee Jefferson County, Texas Jefferson County, Washington Jefferson County, West Virginia Jefferson County, Wisconsin Jefferson Parish, Louisiana Franklin County (25 counties) Twenty three of the twenty five Franklin Counties in the United States are named for Benjamin Franklin, the famous Founding Father, printer, scientist, philosopher, and diplomat. Franklin County, Alabama Franklin County, Arkansas Franklin County, Florida Franklin County, Georgia Franklin County, Idaho: named for Franklin, Idaho, the first town in the state, in turn named for Franklin Richards, an apostle of the Church of Jesus Christ of Latter-day Saints Franklin County, Illinois Franklin County, Indiana Franklin County, Iowa Franklin County, Kansas Franklin County, Kentucky Franklin County,