Hillsboro

County:: Montgomery County
County Seat:: Yes
Area (mi²):: 8.628
State:: Illinois

Hillsboro is a city located in Montgomery County, Illinois. Hillsboro has a 2025 population of 5,715. It is also the county seat of Montgomery County. Hillsboro is currently declining at a rate of -0.5% annually and its population has decreased by -2.47% since the most recent census, which recorded a population of 5,860 in 2020.

The average household income in Hillsboro is $69,067 with a poverty rate of 15.75%. The median age in Hillsboro is 41 years: 37.9 years for males, and 53.7 years for females.

Demographics

The racial composition of Hillsboro includes 82.58% White, 11.68% Black or African American, and smaller percentages for other race, Native Hawaiian or Pacific Islander, Native American, Asian and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Native Hawaiian or Pacific Islander

Native American

Asian

Race	Population	Percentage (of total)
White	4,701	82.58%
Black or African American	665	11.68%
Two or more races	226	3.97%
Other race	95	1.67%
Native Hawaiian or Pacific Islander	6	0.11%
Native American	0	0%
Asian	0	0%

Hillsboro Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Hillsboro's average per capita income is $39,390. Household income levels show a median of $48,158. The poverty rate stands at 15.75%.

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	$108,750	-
Families	$95,417	$107,044
Households	$48,158	$69,067
Non Families	$25,833	$32,562

$39,390

Average Income

$48,158

Median Household Income

15.75%

Poverty Rate