Dubuque County, Iowa

Dubuque County
Dubuque County
County
	The Dubuque County Courthouse is an example of Beaux-Arts architecture.
	Seal
	Location within the U.S. state of Iowa
	Iowa's location within the U.S.
	Coordinates: 42°28′15″N 90°52′42″W / 42.47083°N 90.87833°W
Country	United States
State	Iowa
Founded	1834
Named for	Julien Dubuque
Seat	Dubuque
Largest city	Dubuque
Area
• Total	617 sq mi (1,600 km2)
• Land	608 sq mi (1,570 km2)
• Water	8.3 sq mi (21 km2) 1.4%
Population (2020)
• Total	99,266
• Density	160/sq mi (62/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	2nd
Website	www.dubuquecountyiowa.gov

Dubuque County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 99,266,^[1] making it the eighth-most populous county in Iowa. The county seat is Dubuque.^[2] The county is named for Julien Dubuque, the first European settler of Iowa.

Dubuque County comprises the Dubuque, IA Metropolitan Statistical Area.^[3]

^ "2020 Census State Redistricting Data". census.gov. United states Census Bureau. Retrieved August 11, 2020.
^ "Find a County". National Association of Counties. Archived from the original on July 4, 2012. Retrieved June 7, 2011.
^ "Metropolitan Statistical Area Definitions" (PDF). Archived from the original (PDF) on October 1, 2006. Retrieved January 17, 2007.