Belvidere Flag

Belvidere

County:
Boone County
County Seat:
Yes
Area (mi²):
12.777
State:
Illinois

Belvidere is a city located in Boone County, Illinois. Belvidere has a 2026 population of 25,352. It is also the county seat of Boone County. Belvidere is currently growing at a rate of 0.06% annually and its population has increased by 0.32% since the most recent census, which recorded a population of 25,271 in 2020.

The median household income in Belvidere is $64,528 with a poverty rate of 14.64%. The median age in Belvidere is 38.7 years: 37.5 years for males, and 39.6 years for females. For every 100 females there are 101.7 males.

25.4K
Total Population
1,984
Density (mi²)
14 0.06%
Growth

Belvidere Population

Belvidere Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202625,352140.06%
202525,338130.05%
202425,325160.06%
202325,3091750.7%
202225,134-19-0.08%
202125,153-118-0.47%
202025,271-62-0.24%
201925,014-83-0.33%
201825,097-70-0.28%
201725,167-45-0.18%
201625,212-23-0.09%
201525,235-66-0.26%
201425,301-48-0.19%
201325,349-11-0.04%
201225,360-213-0.83%
201125,573-25-0.1%
201025,598130.05%
200020,8204,86230.47%
199015,9587825.15%
198015,1761,1157.93%
197014,0612,83825.29%
196011,2231,80119.11%
19509,4221,32816.41%
19408,094-29-0.36%
19308,1233194.09%
19207,8045517.6%
19107,2533164.56%
19006,9373,07079.39%
18903,86791631.04%
18802,951-280-8.67%
18703,23100%

Median Age

Overall: 38.7 years
Female: 39.6 years
Male: 37.5 years

Belvidere Adults

There are 18,988 adults, (4,029 of whom are seniors) in Belvidere.

Sex Ratio

Female: 12,272 (49.6%)
Male: 12,480 (50.4%)

Demographics

The racial composition of Belvidere includes 62.23% White, 23.25% other race, 3.39% Black or African American, and smaller percentages for Asian, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White15,40462.23%
Other race5,75423.25%
Two or more races2,3879.64%
Black or African American8383.39%
Asian2731.1%
Native American960.39%
Race
Population ↓
Percentage (of total)
Other race5,67722.94%
Two or more races1,9197.75%
White9763.94%
Native American960.39%
Black or African American610.25%
Race
Population ↓
Percentage (of total)
White14,42858.29%
Black or African American7773.14%
Two or more races4681.89%
Asian2731.1%
Other race770.31%

Belvidere Marital Status

Economics and Income Statistics

Belvidere 's average per capita income is $40,258. Household income levels show a median of $64,528. The poverty rate stands at 14.64%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$99,509-
Families$71,840$92,569
Households$64,528$80,679
Non Families$41,786$51,808

$40,258

Average Income

$64,528

Median Household Income

14.64%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)