Oneco Flag

Oneco

County Seat:
No
Area (mi²):
27.456
State:
Illinois

Oneco is located in Stephenson County, Illinois. Oneco has a 2025 population of 1,234 . Oneco is currently declining at a rate of -0.56% annually and its population has decreased by -3.89% since the most recent census, which recorded a population of 1,284 in 2020.

The average household income in Oneco is $74,382 with a poverty rate of 12%. The median age in Oneco is 40.8 years: 42.5 years for males, and 39.9 years for females. For every 100 females there are 101.4 males.

1.2K
Total Population
45
Density (mi²)
-7 -0.56%
Growth

Oneco Population

Oneco Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Oneco includes 96.81% White, and smaller percentages for Two or more races, other race, Black or African American and multiracial populations.

Population by Race

White (96.81%)

Two or more races (2.26%)

Other race (0.7%)

Black or African American (0.23%)

Race
Population
Percentage (of total)
White1,24496.81%
Two or more races292.26%
Other race90.7%
Black or African American30.23%

Oneco Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Oneco's average per capita income is $46,290. Household income levels show a median of $66,445. The poverty rate stands at 12%.

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$91,172-
Families$77,000$88,034
Households$66,445$74,382
Non Families$33,125$37,609

$46,290

Average Income

$66,445

Median Household Income

12%

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)