Belvidere is home to 24,752 people in Illinois. 13% of adults hold a bachelor's degree, below the 36% national rate. Home values have risen by half since 2000, reaching $158,900. That trails the Illinois median by roughly 23%. Density works out to 1,978 people per square mile. Growth has run 19% since 2000, or 3,932 more people.
At a glance
Lower income
median household income $64,528, below the US median
US median: $82,259
Mid-age
median age 38.7
US median: 38.9
Less educated
13% hold a bachelor's degree
US average: 36%
More affordable
home values down 9%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Belvidere
What changed most since 1990
Hispanic share10.1% → 35.3%(+25.2 pts)US over the same years: +9.9 pts
White share88.4% → 58.3%(−30.2 pts)US over the same years: −17.8 pts
Median home value (2024 dollars)$139,204 → $158,900(+14%)US over the same years: +67%
Belvidere's population equals 47% of Boone County's. Its number of adults with a bachelor's degree or higher equals 25% of the county's. Its number of households without a car equals 81% of the county's.
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)18.1%(180)
US avg: 26.4%
Gulf War (1990s)32%(317)
US avg: 24.3%
Vietnam era40.8%(405)
US avg: 33.1%
Korean War3.4%(34)
US avg: 4.5%
World War II1.2%(12)
US avg: 1%
Share of the 992 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
Belvidere, decade by decade
Belvidere 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
15,958
$70,824
$139,204
7.7%
25.9
2000
20,820
$77,473
$174,879
8.8%
45.5
2010
25,585
$67,009
$198,523
14.0%
61.0
2020
25,339
$63,764
$138,900
15.0%
69.0
2024
24,752
$64,528
$158,900
12.8%
66.8
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.
