(Ellicott City, the county seat of Howard County, is the largest unincorporated county seat in the United States, followed by Towson, the county seat of Baltimore County, Maryland.

It is the county seat of Portneuf Regional County Municipality and was as well the county seat of the designated Portneuf County.

It is the county seat of Clayton County.

The county seat is Lima.

The city is the county seat of Decatur County.

The city is the county seat of Newton County.

The county seat is Madison, Georgia.

Its county seat is Bowling Green.

Incorporated in 1852, Oakland is the county seat of Alameda County.

Butler is the county seat of Taylor County, Georgia, United States.

It is the county seat of Payne County, Oklahoma, United States.

Valparaiso ( ) is the county seat of Porter County, Indiana, United States.

It is the seat of Hamilton County.

It is the county seat of the City and County of Honolulu.

Salinas is the county seat and largest municipality of Monterey County, California.

York is the county seat of York County and is located at .

Ashburn is a city in Turner County, Georgia and the county seat.

Clarendon is a city in and county seat of Monroe County, Arkansas.

Clinton is the county seat of Van Buren County, Arkansas, United States.

Prescott is a city and the county seat of Nevada County, Arkansas.

In 1849, it became the county seat when Monroe County was formed.

Sumter is the county seat of Sumter County, South Carolina, United States.

Dillon is the county seat of Dillon County in eastern South Carolina.

St. Albans City (county seat) Franklin County, Vermont, in the United States.

Port Gibson is the county seat of Claiborne County and home to the Claiborne County Courthouse.

Cuthbert is a city in, and the county seat of, Randolph County, Georgia.

Jackson is a city and county seat of Jackson County, Minnesota, United States.

Marianna is a city in and the county seat of Lee County, Arkansas.

Monticello is a city in and the county seat of Drew County, Arkansas.

Murfreesboro is a city and county seat of Pike County, Arkansas, United States.

Yellville is a city and county seat in Marion County, Arkansas, United States.

Beloit is a city and county seat of Mitchell County, Kansas, United States.

Cottonwood Falls is the largest city and county seat of Chase County, Kansas.

Winfield is a city and county seat of Cowley County, Kansas, United States.

Gallatin is a city in and the county seat of Sumner County, Tennessee.

Canyon is a city and county seat of Randall County, Texas, United States.

Clinton is a city and county seat of Hickman County, Kentucky, United States.

Magong City () is the county seat of Penghu County, Republic of China (Taiwan).

Dixon is a city and county seat of Lee County, Illinois, United States.

Tupelo is the county seat and the largest city of Lee County, Mississippi.

Clarksdale is a city in Coahoma County, Mississippi, and seat of the county.

Rolla is a city and county seat of Phelps County, Missouri, United States.

Plessisville, Quebec is a county seat of L'Érable Regional County Municipality, Quebec, Canada.

Buffalo is a town and county seat of Harper County, Oklahoma, United States.

Decatur is a city in, and county seat of, DeKalb County, Georgia, United States.