Belvidere township Flag

Belvidere township

County:
Boone County
County Seat:
No
Area (mi²):
36.103
State:
Illinois

Belvidere township is located in Boone County, Illinois. Belvidere township has a 2026 population of 29,531. Belvidere township is currently growing at a rate of 0.1% annually and its population has increased by 0.57% since the most recent census, which recorded a population of 29,365 in 2020.

The median household income in Belvidere township is $76,622 with a poverty rate of 11.4%. The median age in Belvidere township is 41.1 years: 38.9 years for males, and 43.2 years for females. For every 100 females there are 98.3 males.

29.5K
Total Population
818
Density (mi²)
30 0.1%
Growth

Belvidere township Population

Belvidere township Population

Year ↓
Population
Growth
Annual Change
202629,531300.1%
202529,501300.1%
202429,471800.27%
202329,3911880.64%
202229,203-47-0.16%
202129,250-115-0.39%
202029,365-61-0.21%
201929,471-74-0.25%
201829,545-77-0.26%
201729,622-54-0.18%
201629,676-23-0.08%
201529,699-77-0.26%
201429,776-40-0.13%
201329,816-3-0.01%
201229,819-237-0.79%
201130,056-53-0.18%
201030,063-42-0.14%

Median Age

Overall: 41.1 years
Female: 43.2 years
Male: 38.9 years

Belvidere township Adults

There are 22,418 adults, (5,494 of whom are seniors) in Belvidere township.

Sex Ratio

Female: 14,769 (50.4%)
Male: 14,517 (49.6%)

Demographics

The racial composition of Belvidere township includes 67.17% White, 16.37% other race, and smaller percentages for Black or African American, Asian, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White19,67267.17%
Other race4,79316.37%
Two or more races3,40011.61%
Black or African American8492.9%
Asian3901.33%
Native American1820.62%
Race
Population ↓
Percentage (of total)
Other race4,75916.25%
Two or more races2,6048.89%
White1,2194.16%
Native American1790.61%
Black or African American610.21%
Race
Population ↓
Percentage (of total)
White18,45363.01%
Two or more races7962.72%
Black or African American7882.69%
Asian3901.33%
Other race340.12%
Native American30.01%

Belvidere township Marital Status

Economics and Income Statistics

Belvidere township's average per capita income is $47,940. Household income levels show a median of $76,622. The poverty rate stands at 11.4%.

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$121,887-
Families$88,165$123,586
Households$76,622$103,983
Non Families$42,787$55,418

$47,940

Average Income

$76,622

Median Household Income

11.4%

Poverty Rate

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)