Jo Daviess County is a county of 21,851 people in Illinois. The median age is 51.5, about 13 years above the US median. Few US counties rank higher on income. Owners hold 80% of the housing stock. 2% of people here were born outside the United States. The typical home is worth $209,900, having more than doubled since 2000.
At a glance
Lower income
median household income $73,993, below the US median
US median: $82,259
Older
median age 51.5
US median: 38.9
Less educated
29% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Jo Daviess County
What changed most since 1990
Median age36.2 → 51.5(+15.3 years)US over the same years: +6.0 years
White share99.2% → 91.9%(−7.3 pts)US over the same years: −17.8 pts
Hispanic share0.5% → 4.2%(+3.7 pts)US over the same years: +9.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)13.9%(181)
US avg: 26.4%
Gulf War (1990s)13.6%(178)
US avg: 24.3%
Vietnam era52.3%(683)
US avg: 33.1%
Korean War2.5%(33)
US avg: 4.5%
World War II1%(13)
US avg: 1%
Share of the 1,305 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Jo Daviess County, decade by decade
Jo Daviess County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
21,821
$64,519
$116,883
12.1%
2.1
2000
22,289
$73,615
$170,325
15.2%
6.1
2010
22,678
$72,330
$198,523
23.0%
10.6
2020
22,035
$71,781
$189,442
26.4%
18.1
2024
21,851
$73,993
$209,900
28.9%
19.1
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
