Rio Flag

Rio

County:
Knox County
County Seat:
No
Area (mi²):
0.312
State:
Illinois

Rio is a village located in Knox County, Illinois. Rio has a 2026 population of 203. Rio is currently declining at a rate of -0.49% annually and its population has decreased by -2.87% since the most recent census, which recorded a population of 209 in 2020.

The median household income in Rio is $72,500 with a poverty rate of 19.51%. The median age in Rio is 35.8 years: 47.1 years for males, and 31.3 years for females. For every 100 females there are 73.7 males.

203
Total Population
650
Density (mi²)
-1 -0.49%
Growth

Rio Population

Rio Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026203-1-0.49%
2025204-1-0.49%
202420500%
202320500%
2022205-2-0.97%
2021207-2-0.96%
2020209-1-0.48%
2019207-2-0.96%
2018209-2-0.95%
2017211-1-0.47%
2016212-2-0.93%
2015214-2-0.93%
2014216-1-0.46%
2013217-1-0.46%
2012218-1-0.46%
2011219-1-0.45%
201022000%

Median Age

Overall: 35.8 years
Female: 31.3 years
Male: 47.1 years

Rio Adults

There are 154 adults, (48 of whom are seniors) in Rio.

Sex Ratio

Female: 118 (57.6%)
Male: 87 (42.4%)

Demographics

The racial composition of Rio includes 92.68% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White19092.68%
Two or more races125.85%
Black or African American31.46%
Race
Population ↓
Percentage (of total)
Two or more races83.9%
White62.93%
Black or African American10.49%
Race
Population ↓
Percentage (of total)
White18489.76%
Two or more races41.95%
Black or African American20.98%

Rio Marital Status

Economics and Income Statistics

Rio 's average per capita income is $42,083. Household income levels show a median of $72,500. The poverty rate stands at 19.51%.

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$91,250-
Families$81,875$93,652
Households$72,500$89,112
Non Families$51,563$55,592

$42,083

Average Income

$72,500

Median Household Income

19.51%

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)