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Jo Daviess County

county in Illinois, United States

Key facts

Country: United States
State: Illinois
Named after: Joseph Hamilton Daveiss
Seat: Galena
Largest city: Galena
Total: 619 sq mi (1,600 km )
Land: 601 sq mi (1,560 km )
Water: 18 sq mi (47 km ) 2.9%
Estimate 2025: 21,594
Density: 36.7/sq mi (14.2/km )
Time zone: UTC−6 ( Central )
Summer dst: UTC−5 ( CDT )
Congressional district: 16th
Website: www .jodaviesscountyil .gov

via Wikipedia infobox

Article

Jo Daviess County (/ˈdeɪvɪs/) is the northwesternmost county in the U.S. state of Illinois. According to the 2020 census, it had a population of 22,035. Its county seat is Galena. Jo Daviess County is part of the Tri-State Area and is located near Dubuque, Iowa and Platteville, Wisconsin. As part of the Driftless Area, Jo Daviess County contains rugged terrain compared to the rest of the state. Within Jo Daviess County lies Charles Mound, the highest natural point in Illinois, as well as eight of the ten highest points in Illinois.

History