Adams County, Illinois Population 2024

64,326

Adams County, Illinois's estimated 2024 population is 64,326 with a growth rate of -0.18% in the past year according to the most recent United States census data. Adams County, Illinois is the 23rd largest county in Illinois. The 2010 population was 67,158 and has seen a growth of -4.22% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202963,751-115-0.18%
202863,866-115-0.18%
202763,981-115-0.18%
202664,096-115-0.18%
202564,211-115-0.18%
202464,326-115-0.18%
202364,441-115-0.18%
202264,556-508-0.78%
202165,064-550-0.84%
202065,6142120.32%
201965,402-201-0.31%
201865,603-470-0.71%
201766,073-417-0.63%
201666,490-360-0.54%
201566,850-133-0.2%
201466,983-22-0.03%
201367,005-144-0.21%
201267,149-65-0.1%
201167,214560.08%
201067,15800%
199066,090-5,532-7.72%
198071,6227611.07%
197070,8612,3943.5%
196068,4673,7775.84%
195064,690-539-0.83%
194065,2292,4453.89%
193062,7845960.96%
192062,188-2,400-3.72%
191064,588-2,470-3.68%
190067,0585,1708.35%
189061,8882,7534.66%
188059,1352,7734.92%
187056,36215,03936.39%
186041,32314,81555.89%
185026,50812,03283.12%
184014,47612,290562.21%
18302,186-61,565-96.57%
2024 Growth Rate
-0.18% (-115)
County Website
Adams County
County Seat
Quincy
2020 Population
65,614
Area
855 mi²
Density
75 people/mi²
Growth Since 2020
-1.96% (-1,288)
Founded
1825

Population by Race

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%

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Adams County, Illinois Population by Race

Adams County, Illinois Population Pyramid 2024

Adams County, Illinois Median Age

41.1

Total

40.3

Male

41.8

Female

Adams County, Illinois Adults

There are 50,373 adults, (13,072 of whom are seniors) in Adams County, Illinois.

Adams County, Illinois Age Dependency

74.7

Age Dependency Ratio

35

Old Age Dependency Ratio

39.7

Child Dependency Ratio

Adams County, Illinois Sex Ratio

Female33,20450.95%
Male31,96249.05%

Adams County, Illinois Population by Age

Adams County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All27,7702.2972.527.5
Married12,5123.0689.510.5
Non Family11,2141.1758.841.2
Female2,7443.0256.643.4
Male1,3002.9760.839.2

2.97

Average Family Size

2.29

Average Household Size

72.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Adams County, Illinois Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade2,2364.95%
Associates Degree4,3729.68%
Bachelors Degree8,16318.07%
Graduate Degree4,0138.88%
High School Graduate15,75334.88%
Less Than 9th Grade7221.6%
Some College9,90921.94%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Adams County, Illinois Educational Attainment by Sex (over 25)

Adams County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White41,91039,44211,553
Black1,5121,365153
2+ Races1,079854260
Hispanic680584203
Asian252207102
Other Race21616564
Native American23100
Islander11110

The highest rate of high school graduation is among islander people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 40.48%.

Adams County, Illinois Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$57,550$64,712$50,478
Graduate Degree$67,372$79,767$58,352
High School Graduate$40,281$47,528$32,865
Less Than 9th Grade$34,492$43,594$33,010
Overall$45,731$52,205$38,646
Some College$40,960$48,403$33,929

$45,731

Average Earnings

$52,205

Average Male

$38,646

Average Female

Adams County, Illinois Earnings by Educational Attainment

Adams County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Adams County, Illinois Language

97.34% of Adams County, Illinois residents speak only English, while 2.66% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.27% of the population.

Adams County, Illinois Language

Adams County, Illinois Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White57,6386,36911.05%
Black2,07859228.49%
Multiple2,76153719.45%
Hispanic1,22740132.68%
Other2803713.21%
Asian373174.56%
Islander11218.18%

12.26%

Overall Poverty Rate

10.31%

Male Poverty Rate

14.13%

Female Poverty Rate

Poverty in Adams County, Illinois

The race most likely to be in poverty in Adams County, Illinois is Hispanic, with 32.68% below the poverty level.

The race least likely to be in poverty in Adams County, Illinois is Asian, with 4.56% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.14%. Among those working part-time, it was 13.57%, and for those that did not work, the poverty rate was 24.62%.

Adams County, Illinois Poverty

rate

Rate
Poverty
Less Than 9th Grade29.83%
High School14.41%
Some College9.58%
Bachelors or Greater3.76%

Adams County, Illinois Poverty Rate by Education

rate

Rate
Poverty
Male Unemployed32.76%
Female Unemployed31.38%
Female Employed7.02%
Male Employed3.68%

Adams County, Illinois Poverty Rate by Employment Status and Sex

Adams County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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

mean

median

Income by Household Type

Adams County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

50.5%

Overall Marriage Rate

52.4%

Male Marriage Rate

48.7%

Female Marriage Rate

Adams County, Illinois Married by Age and Sex

male

female

Adams County, Illinois Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.

Adams County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Adams County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

4,056

Number of Veterans

3,697

Male Veterans

359

Female Veterans

War
Veterans
Vietnam1,355
First Gulf War910
Second Gulf War843
Korea394
World War II91

Adams County, Illinois Veterans by War

count

Age Group
Veterans
75+1,365
35 to 54938
65 to 74868
55 to 64554
18 to 34331

Adams County, Illinois Veterans by Age

count

Name
Veterans
% of Total
White3,8028.18%
Black1146.38%
Hispanic768.95%
2+ Races755.29%
Other Race5620.29%
Islander981.82%

Adams County, Illinois Veterans by Race

Adams County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

6.88%

Veteran Poverty Rate

32.12%

Veteran Disability Rate

Adams County, Illinois Veterans by Education

LaborForceParticipation

65.3%

Labor Force Participation

62.9%

Employment Rate

3.6%

Unemployment Rate

Adams County, Illinois Employment by Age

LaborForceParticipation

Adams County, Illinois Employment by Race

LaborForceParticipation

Adams County, Illinois Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

76.77%

Born in Adams County, Illinois

98.64%

Native Born

1.36%

Foreign Born

0.46%

Non Citizen

0.9%

Naturalized

Place of Birth

98.64% of Adams County, Illinois residents were born in the United States, with 76.77% having been born in Illinois. 0.46% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Adams County, Illinois Place of Birth

Sources