Adams County Flag

Adams County

State:
Illinois
County Seat:
Quincy

Adams County's estimated 2025 population is 64,211 with a growth rate of -0.18% in the past year according to the most recent United States census data. Adams County is the 23rd largest county in Illinois. The 2010 population was 67,158 and has seen a growth of -4.39% since that time.

64,211
Total Population
75
Population Density (miĀ²)
23
Population Rank (State)
-115 -0.18%
Annual Population Growth

Adams County Population

Adams County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Adams County includes 90.95% White, 3.56% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White59,27190.95%
Two or more races2,7804.27%
Black or African American2,3203.56%
Asian4370.67%
Other race3240.5%
Native American230.04%
Native Hawaiian or Pacific Islander110.02%

Adams County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Adams County's average per capita income is $45,731. Household income levels show a median of $64,962. The poverty rate stands at 12.26%.

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$99,799$119,295
Families$86,166$103,627
Households$64,962$83,547
Non Families$38,823$51,247

$45,731

Average Income

$64,962

Median Household Income

12.26%

Poverty Rate