Wayne County is the most populated county.
Maricopa County home of the Phoenix area is the most populated county in Arizona.
Oahu is the most populated island in Hawaii; Maui County is the most populated county.
Minneapolis
Los Angles is the most populated area of California. It is a mega metropolitan area.
Cambria county
The most populated county in the US is Los Angeles County in California with a total population of 9,878,554.
Stoughton is the fifth most populated city in Dane county with a population of 12,692.
Salt Lake County
Cuyahoga County (Cleveland)
Los Angeles County
Kentuckys most densely populated county is Jefferson.It has more than twice the populous as the second largest county Fayette.