The largest city and seat is Galena. It is named for Joseph Hamilton Daveiss, a former U.S. District Attorney from Kentucky who was killed in the 1811 battle of Tippecanoe.
It borders Stephenson and Carroll County Illinois, Grant and Lafayette County Wisconsin as well as Dubuque and Jackson County Iowa.
Because the county covers a large chunk of northwest Illinois, with many small cities and lots of hills and farmlands, the cities will be divided up by area.
Apple River Area
East Dubuque Area
Scale Mound Area