A town or city that is the administrative center of its county.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "county seat" in a sentence
"After Menard County was formed out of a portion of Sangamon County, and the county seat established at Petersburg, Mr. Lincoln was a regular attendant at the courts."
"Doing the chores in the morning, he would walk to Booneville, the county seat of Warwick County, seventeen miles away, then home in time to do the chores at night, repeating this day after day."
"The town of Humboldt is the county seat for Sherburne county."