Jo Daviess County is a county located in the U.S. state of Illinois. As of 2000, the population was 22,289. Its county seat is Galena, Illinois.
Jo Daviess County is part of the Tri-State Area and the Dubuque, Iowa, Galena, Illinois, Platteville, Wisconsin, metropolitan area. Jo Daviess County's population holds 13-15% of the area's population.
As part of the Driftless Area, Jo Daviess County is known for its extraordinarily scenic stretches of road and valley views.
Within Jo Daviess County lies Charles Mound, the highest natural point in Illinois.
According to the U.S. Census Bureau
, the county has a total area of 619 square miles
), of which, 601 square miles (1,557 km²) of it is land and 18 square miles (46 km²) of it (2.85%) is water.
Apple River, Berreman, Council Hill, Derinda, Dunleith, East Galena, Elizabeth, Guilford, Hanover, Menominee, Nora, Pleasant Valley, Rawlins, Rice, Rush, Scale Mounds, Stockton, Thompson, Vinegar Hill, Wards Grove, Warren, West Galena, Woodbine
Jo Daviess County was formed in 1827 out of Henry
and Putnam Counties
. It is named for Maj. Joseph Hamilton Daveiss
, United States District Attorney
, who was killed in 1811 at the Battle of Tippecanoe
. Maj. Daveiss' name is universally misspelled, as in the name of this and other counties. The local pronunciation is "Davis."
County border changes
- 1830- The northern border of Illinois and Wisconsin was formally established. Until that time, several Wisconsin towns actually were under the jurisdiction of Jo Daviess County.
- 1831- Rock Island County was formed from a part of the county, along with a new northern extension of Henry County and Putnam County.
- 1836- Whiteside, Ogle, and Winnebago counties were formed from the southern and eastern sections of the county.
- 1837- Stephenson County was formed from the eastern section of the county.
- 1839- Carroll County was formed from the southern section of the county.
It is now the host of a proposed wind farm in Nora, which would make the county ahead of the curve in the "green" revolution of renewable and alternative energy sources.
As of the census
of 2000, there were 22,289 people, 9,218 households, and 6,286 families residing in the county. The population density
was 37 people per square mile (14/km²). There were 12,003 housing units at an average density of 20 per square mile (8/km²). The racial makeup of the county was 98.66% White
, 0.20% Black
or African American
, 0.10% Native American
, 0.16% Asian
, 0.34% from other races
, and 0.53% from two or more races. 1.53% of the population were Hispanic
of any race. 46.9% were of German
, 11.5% Irish
, 10.5% American
and 9.0% English
ancestry according to Census 2000
. 97.8% spoke English
and 1.7% Spanish
as their first language.
There were 9,218 households out of which 27.30% had children under the age of 18 living with them, 58.20% were married couples living together, 6.50% had a female householder with no husband present, and 31.80% were non-families. 27.50% of all households were made up of individuals and 12.70% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.92.
In the county the population was spread out with 23.20% under the age of 18, 6.70% from 18 to 24, 25.30% from 25 to 44, 26.80% from 45 to 64, and 17.90% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 100.50 males. For every 100 females age 18 and over, there were 97.00 males.
The median income for a household in the county was $40,411, and the median income for a family was $48,335. Males had a median income of $32,231 versus $22,096 for females. The per capita income for the county was $21,497. About 4.00% of families and 6.70% of the population were below the poverty line, including 7.60% of those under age 18 and 7.50% of those age 65 or over.
Cities and towns