Rio Flag

Rio

County:
Knox County
County Seat:
No
Area (mi²):
36.137
State:
Illinois

Rio is located in Knox County, Illinois. Rio has a 2025 population of 504 . Rio is currently growing at a rate of 0.2% annually but its population has decreased by -2.14% since the most recent census, which recorded a population of 515 in 2020.

The average household income in Rio is $101,634 with a poverty rate of 14.48%. The median age in Rio is 52.2 years: 57.1 years for males, and 52.2 years for females. For every 100 females there are 89.6 males.

504
Total Population
14
Density (mi²)
1 0.2%
Growth

Rio Population

Rio Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Rio includes 93.17% White, and smaller percentages for Asian, Black or African American and multiracial populations.

Population by Race

White (93.17%)

Two or more races (4.1%)

Asian (1.91%)

Black or African American (0.82%)

Race
Population
Percentage (of total)
White34193.17%
Two or more races154.1%
Asian71.91%
Black or African American30.82%

Rio Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Rio's average per capita income is $55,417. Household income levels show a median of $81,731. The poverty rate stands at 14.48%.

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$104,063-
Families$102,500$110,578
Households$81,731$101,634
Non Families$70,000$80,604

$55,417

Average Income

$81,731

Median Household Income

14.48%

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)