Olney

County:: Richland County
County Seat:: Yes
Area (mi²):: 6.931
State:: Illinois

Olney is a city located in Richland County, Illinois. Olney has a 2025 population of 8,392. It is also the county seat of Richland County. Olney is currently declining at a rate of -0.71% annually and its population has decreased by -3.44% since the most recent census, which recorded a population of 8,691 in 2020.

The average household income in Olney is $72,237 with a poverty rate of 15.4%. The median age in Olney is 40.7 years: 38 years for males, and 42.2 years for females.

Demographics

The racial composition of Olney includes 92.5% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	8,199	92.5%
Two or more races	427	4.82%
Other race	148	1.67%
Black or African American	66	0.74%
Asian	11	0.12%
Native American	8	0.09%
Native Hawaiian or Pacific Islander	5	0.06%

Olney Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Olney's average per capita income is $43,356. Household income levels show a median of $57,997. The poverty rate stands at 15.4%.

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	$103,861	-
Families	$76,069	$93,925
Households	$57,997	$72,237
Non Families	$28,726	$40,537

$43,356

Average Income

$57,997

Median Household Income

15.4%

Poverty Rate