Dunleith Township is one of 23 townships in Jo Daviess County, Illinois, United States. As of the 2010 census, its population was 3,820 and it contained 1,713 housing units. It was formed from Menominee Township on March 2, 1865.

Geography

Dunleith Township is in the very northwest corner of Illinois, abutting Wisconsin to the north and Iowa to the west across the Mississippi River.

According to the 2010 census, the township has a total area of 11.75 square miles (30.4 km), of which 9.45 square miles (24.5 km) (or 80.43%) is land and 2.29 square miles (5.9 km) (or 19.49%) is water.

Dunleith is Townships 28 (part) and 29 North, Range 2 (part) West of the Fourth Principal Meridian.

Cities, towns, villages

• East Dubuque

Major highways

• U.S. Route 20 - east towards Galena and west over the Mississippi River on the Julien Dubuque Bridge to Dubuque, Iowa
• Illinois Route 35 - a northeast-southwest route from Jct US 20 in East Dubuque to the Wisconsin state line, continuing as

Rivers

• Mississippi River

Lakes

• Frentress Lake
• Round Lake
• Switzer Lake

Demographics

Historical population

Census	Pop.	Note	%±
2016 (est.)	3,672
U.S. Decennial Census

School districts

• East Dubuque Community Unit School District 119

Political districts

• Illinois' 16th congressional district
• State House District 89
• State Senate District 45