Arizona
La Paz County
Created: 1983
Parent: Yuma County
County Seat: Parker
Arkansas
El Dorado-(Union County)
Created: 1829
Parent: Hempstead & Clark Counties
County Seat: El Dorado
California
Los Angeles & North Hollywood-(Los Angeles County)
Created: 1850
County Seat: Los Angeles
San Francisco
Created: 1850
County Seat: San Francisco
San Joaquin-(Fresno County)
Created: 1850
County Seat: Stockton
Connecticut
Vernon-(Tollard County)
Created: 1785
County Seat: Rockville
Illinois
Belleville-(St. Clair County)
Created: 1790
County Seat: Belleville
Jefferson County
Created: 1819
County Seat: Mount Vernon
Venice-(Madison County)
Created: 1812
County Seat: Edwardsville
Kentucky
Boone County
Created: 1799
County Seat: Burlington
Louisville- (Jefferson County)
Created: 1780
Parent: Kentucky Co., VA
County Seat: Louisville
Maryland
Baltimore City & Halethorpe-(Baltimore County)
Created: 1851
County Seat: Baltimore
Michigan
Lansing & Wheatfield-(Ingham County)
Created: 1838
County Seat: Mason
Minnesota
Hennepin County
Created: 1852
County Seat: Minneapolis
Montana
Lewistown-(Fergus County)
Created: 1886
County Seat: Lewistown
New Jersey
Hoboken-(Hudson County)
Created: 1840
Parent: Bergen County
County Seat: Jersey City
New York
Elmira-(Chemung County)
Created: 1836
County Seat: Elmira
Ohio
Bainbridge-(Geauga County)
Created: 1805
Parent: Trumbull County
County Seat: Chardon
Cleveland & South Euclid-(Cuyahoga County)
Created: 1808
County Seat: Cleveland
Fremont-(Sandusky County)
Created: 1820
County Seat: Fremont
Toledo-(Lucas County)
Created: 1835
County Seat: Toledo
Riley-(Vinton County)
Created: 1850
County Seat: McArthur
Youngstown-(Mahoning County)
Created: 1846
County Seat: Youngstown
Oregon
Roseburg-(Douglas County)
Created: 1852
County Seat: Roseburg
Pennsylvania
Brady-(Indiana County)
Created: 1803
Parent: Westmoreland & Lycoming Counties
County Seat: Indiana
Hempfield-(Lancaster County)
Created: 1729
County Seat: Lancaster
Wisconsin