Belknap Flag

Belknap

County:
Johnson County
County Seat:
No
Area (mi²):
1.057
State:
Illinois

Belknap is a village located in Johnson County, Illinois. Belknap has a 2026 population of 86. Belknap is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 86 in 2020.

The median household income in Belknap is $67,500 with a poverty rate of 6.09%. The median age in Belknap is 50.5 years: 50.7 years for males, and 45.6 years for females. For every 100 females there are 101.8 males.

86
Total Population
81
Density (mi²)

Belknap Population

Belknap Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20268600%
20258600%
20248600%
202386-1-1.15%
20228700%
20218711.16%
20208600%
201910800%
201810821.89%
2017106-1-0.93%
201610710.94%
201510621.92%
2014104-2-1.89%
201310610.95%
201210510.96%
201110400%
201010400%

Median Age

Overall: 50.5 years
Female: 45.6 years
Male: 50.7 years

Belknap Adults

There are 105 adults, (16 of whom are seniors) in Belknap.

Sex Ratio

Female: 57 (49.6%)
Male: 58 (50.4%)

Demographics

The racial composition of Belknap includes 96.52% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White11196.52%
Two or more races43.48%
Race
Population ↓
Percentage (of total)
White11196.52%
Two or more races43.48%

Belknap Marital Status

Economics and Income Statistics

Belknap 's average per capita income is $34,563. Household income levels show a median of $67,500. The poverty rate stands at 6.09%.

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$155,795-
Families$155,455$123,528
Households$67,500$73,179
Non Families$34,583$40,760

$34,563

Average Income

$67,500

Median Household Income

6.09%

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)